Commons:Open Access File of the Day/2013
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December 31: the frog Platymantis polillensis
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December 30: Computer simulation of the development of retinal axons in the superior colliculus.
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December 29: a male Copa flavoplumosa spider
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December 28: Orobanche purpurea.
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December 27: A whirligig beetle swimming
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December 26: the gekko Thecadactylus oskrobapreinorum
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December 25: Kaprosuchus saharicus skull. Scale bar: 10 cm.
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December 24: Astaxanthin buildup during growth of a microbial cyst.
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December 23: Müller glia (red) interdigitated with retinal microglia (green).
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December 22: The beetle Cratacanthus dubius.
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December 21: the cichlid Maylandia zebra
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December 20: The moth Idalus paulae.
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December 19: the butterfly Pseudophilotes bavius
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December 18: x-ray showing esophageal atresia
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December 17: Meioglossus psammophilus, the acorn worm
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December 16: drawing of the freshwater clam Pisidium nitidum
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December 15: the lizard Cyrtodactylus philippinicus
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December 14: the coral Corallium konojoi
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December 13: the water flea Daphnia magna
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December 12: Sequential tool use by a New Caledonian Crow.
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December 11: The bivalve Solemya elarraichensis.
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December 10: Titanosauria building a nest
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December 9: the biochemist Kai Simons
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December 8: histologic specimen showing arrhythmogenic right ventricular dysplasia
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December 7: the butterfly Euphydryas maturna
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December 6: CT scan of Mastacembelus platysoma head.
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December 5: bones of the dinosaur Martharaptor
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December 4: Deinodryinus velteni.
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December 3: cricket of family Gryllacrididae spinning silk
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December 2: the marine worm Osedax roseus
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December 1: Aptostichus angelinajolieae.
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November 30: flowers used in RNA interference experiments
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November 29: the snake Cryptelytrops insularis
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November 28: the beetle Abacoleptus paradoxus
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November 26: Gender differences in social network service use
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November 25: Monthly mean and minimum outdoor and indoor temperatures throughout Africa
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November 24: A love dart of the snail Marmorana scabriuscula.
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November 23: plan of the organization Stratospheric Particle Injection for Climate Engineering
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November 22: The spider Mysmena wawuensis.
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November 21: the skink Brachymeles bonitae
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November 20: ceramic vessels from Chiapa de Corzo
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November 19: Haplochromis vonlinnei
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November 18: slug of family Veronicellidae
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November 17: Experimental chamber for studying chemotaxis in response to laminar flow
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November 16: Spawning behaviour of the cichlid fish Lamprologus callipterus.
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November 15: an eye after treatment for Thygeson's superficial punctate keratopathy
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November 14: vertebrae of phosphatodraco, a dinosaur
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November 13: endomyocardial biopsy specimen
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November 12: A male Brookesia micra chameleon.
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November 11: The moth Schrankia taenialis.
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November 10: call of the male frog Pseudhymenochirus merlini
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November 9: Green fluorescent protein expressed in ciliated olfactory sensory neurons.
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November 8: Larsenianthus wardianus.
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November 7: The beetle Abacoleptus curtus.
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November 6: The snail Pomacea insularum.
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November 5: Loboscelidiinae, a wasp
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November 4: the ghost lineage of the ichthyosaur
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November 3: the moth Baniana gobar
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November 1: approaches for HIV vaccine development
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October 31: CT scan indicating MELAS syndrome
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October 30: Aptostichus stephencolberti, a trapdoor spider
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October 29: Ridleyandra chuana, a flower in order Lamiales
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October 28: translocation of protoplasm in the fungus Sordaria fimicola
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October 27: eggs of the snail Pomacea canaliculata
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October 26: Wintonotitan wattsi.
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October 25: Xenodon merremii.
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October 24: Crocidura sapaensis, a shrew
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October 23: Jack Andraka talks about open access
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October 21: cranial cast of the dinosaur Alioramus altai
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October 20: the water snake Cerberus rynchops
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October 19: the jewel beetle Agrilus crepuscularis
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October 18: ultrastructure of hemidesmosomes in mice
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October 17: young zebra finch
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October 16: Pelophila borealis.
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October 15: vocalizations of Pheucticus melanocephalus
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October 14: Helcogramma fuscipectoris, a fish
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October 13: Litoria everetti.
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October 12: the environment of thymocytes
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October 11: MRI showing retinoblastoma
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October 10: dance as sexual selection strategy in Cosmophasis umbratica males
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October 9: Pringleophaga marioni, a subantarctic moth
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October 8: Radiographic comparison of middle Eocene primate fossils from Germany
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October 7: Selenops arikok, a spider
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October 6: Cell biologist James Alexander Thomson.
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October 5: Atlanta brunnea, a sea snail
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October 4: A female Illacme plenipes with 618 legs.
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October 3: The moth Enargia paleacea.
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October 2: The demosponge Tethya wilhelma responds to caffeine.
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October 1: Drymaeus laticinctus, a land snail
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September 30: Squalius janae.
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September 29: A Common basilisk running on water.
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September 28: Cuora amboinensis, an Asian box turtle
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September 27: cladogram depicting evolution of cetaceans
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September 26: The nematode Nippostrongylus brasiliensis.
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September 25: a stain indicating HFE hereditary haemochromatosis
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September 24: Abacoleptus carinatus, an Adephaga beetle
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September 23: finger displaying systemic scleroderma
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September 22: Boiga philippina.
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September 21: Nasals of Einiosaurus procurvicornis.
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September 20: Opisthorchis viverrini, a liver fluke
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September 19: visualization of Alström syndrome
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September 18: Reconstruction of a Rubeosaurus.
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September 17: Ridleyandra chuana, a flower of the family Gesneriaceae
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September 16: relations of genes and the DISC1 protein
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September 15: larvae of the moth Dunama indereci
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September 14: Koala bellowing at the Lone Pine Koala Sanctuary
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September 13: Elimia showalteri.
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September 12: Icterus jamacaii.
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September 11: Nomius pygmaeus.
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September 10: cover of 2006 issue of PLOS Medicine talking about disease mongering
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September 9: MRI of a pulmonary contusion.
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September 8: Nigersaurus skeleton
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September 7: MRI scan of a patient with Gliomatosis cerebri.
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September 6: Apatura metis.
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September 5: phylogenetic tree for major urinary proteins
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September 4: a typical mouse and a muscular mouse after gene doping
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September 3: Macrovipera lebetina.
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September 2: MRI scan of a patient with chordoma.
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September 1: eye tracking while driving
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August 31: map of snakebites
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August 30: Alburnoides fasciatus , a Turkish fish
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August 29: Badister neopulchellus, a beetle
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August 28: Antipathozoanthus hickmani, a Zoantharia
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August 27: fibrous papule on the nose
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August 26: The lizard Euspondylus spinalis
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August 25: Distal phalanx of Orrorin
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August 24: Flower of the orchid Bulbophyllum bicoloratum.
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August 23: The moth Synanthedon andrenaeformis.
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August 22: break in hair due to tricho-hepato-enteric syndrome
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August 21: holotype of Phyllodiscus semoni
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August 20: British zoologist Oldfield Thomas
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August 19: An oral rumble sound of an Asian elephant, visualized with an acoustic camera.
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August 18: The holotype of Microraptor gui.
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August 17: In the Yanachaga–Chemillén National Park in Peru.
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August 16: Elimia variata.
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August 15: Bassaricyon neblina, whose description was published earlier today.
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August 14: Histology of a xanthoma.
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August 13: Species in the moth genus Schacontia.
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August 12: A hamster walking.
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August 11: A 3rd instar larva of Dunama jessiebarronae.
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August 10: nostrils of the bat Niumbaha superba
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August 9: MRI of the sea urchin Psammechinus miliaris
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August 8: symptoms of Naxos syndrome
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August 7: Helluomorphoides praeustus bicolor.
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August 6: Tursiops australis.
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August 5: Piranga ludoviciana vocalizations
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August 4: Phelsuma ornata
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August 3: Calamaria gervaisi
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August 2: Fukuia multistriata.
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August 1: the orchid bee Euglossa villosa
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July 31: the right hand shows acromegaly
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July 30: a Brush-tailed rock-wallaby collared for animal migration tracking
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July 29: Fighting between male Kosciuscola tristis grasshoppers.
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July 28: A two-photon microscopy image of an axon.
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July 26: wing shape of the pterosaur, Azhdarchidae
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July 25: Ahaetulla prasina preocularis.
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July 24: Alcadia conuloides, a snail in family Helicinidae
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July 23: Phyllidia flava.
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July 22: Mimivirus fibers
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July 21: A CT scan of a Mastacembelus moorii head.
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July 20: Lopinga achine.
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July 19: Biochemist Herbert Boyer.
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July 18: highlands of Maubisse in East Timor
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July 17: A female Trogloraptor marchingtoni.
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July 16: tool use by a New Caledonian Crow
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July 14: Partial skull of an Abrictosaurus consors.
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July 13: calling song of Magicicada septendecim, a cicada
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July 12: the sea slug Costasiella kuroshimae
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July 11: The beetle Omoglymmius americanus.
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July 10: radiographic view of caudal regression syndrome
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July 9: The lateral surface of the cerebral cortex of a human brain.
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July 8: Flower of Rossioglossum ampliatum
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July 7: swing of the rhopalia of Tripedalia cystophora
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July 6: Arostropsis groehni, a prehistoric insect
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July 5: the fish Alburnoides eichwaldii
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July 4: angiography showing an aneurysm
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July 3: A female bull shark at the Shark Reef Marine Reserve, Fiji
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July 2: the shrew Myosorex varius
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July 1: eggs of frog Phrynopus curator
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June 30: A flower of the orchid Trichocentrum ascendens.
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June 29: 3D synchrotron tomography of the fossil skeletons of a cynodont and a temnospondyl found in the same Triassic burrow.
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June 28: The crab Bathynectes piperitus.
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June 27: the spider Copa flavoplumosa
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June 24: A pair of Otus jolandae.
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June 23: cutaneous histological features of erythropoietic protoporphyria
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June 22: Microcaecilia dermatophaga.
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June 21: Leptidea morsei
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June 20: courtship rituals of male Maratus volans, a spider
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June 19: female cone of Ephedra strobilacea
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June 18: Skeletal reconstruction of a Troodon.
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June 17: the land snail Xerocrassa montserratensis
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June 16: gene regulatory network of Candida albicans
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June 15: muscle development of the horseshoe worm Phoronopsis harmeri
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June 14: butterfly species of the genus Maniola
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June 13: Skeletal reconstruction of Hatzegopteryx.
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June 12: Macaque monkey's premotor cortex
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June 11: the habitat of the green lacewing Semachrysa jade
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June 10: the sea snail Lobiger viridis
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June 9: A courtship song of a male Cotesia congregata.
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June 8: The snake Cerberus schneiderii.
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June 7: virtual dissection of the worm Lumbrineris latreilli
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June 6: The Mana River at Angoulême, French Guiana.
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June 5: group of tube worms Lamellibrachia luymesi living at a cold seep
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June 4: female Apocephalus borealis ovipositing into the abdomen of a worker honey bee
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June 3: The ginger Larsenianthus assamensis
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June 2: The snail Elimia clara.
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June 1: Ophthalmoscopic findings during vitrectomy
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May 31: Dendrelaphis inornatus timorensis, a snake from Timor-Leste
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May 30: Scanning electron microscopic image of the shell of a Tarebia granifera snail.
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May 29: The butterfly Papilio hospiton.
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May 28: A minor and a major worker of the ant Pheidole pilifera. Scale bar: 1 mm.
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May 27: parietal bones of Einiosaurus procurvicornis
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May 26: A Microcaecilia dermatophaga caecilian with eggs.
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May 25: Varanus timorensis from Timor-Leste.
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May 24: the nudibranch Peltodoris atromaculata
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May 23: operative repair of esophageal atresia
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May 22: the moth Antispila oinophylla on the grape Vitis vulpina
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May 20: Aptostichus barackobamai, the spider named for Barack Obama
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May 19: The ground beetle Cymindis platicollis.
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May 17: Flowers of Silene species
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May 16: Tiered rice paddies in the Baucau district, East Timor.
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May 15: Podarcis pityusensis, the Ibiza wall lizard scavenging fish scraps
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May 14: Ophiocordyceps unilateralis controls behavior of its host ants
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May 13: human cortical development between 26 and 39 week gestational age
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May 12: The snail Tamayoa decolorata.
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May 11: A pair of Herennia multipuncta spiders.
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May 10: events in alpha-synuclein toxicity
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May 9: Pelochelys cantorii from Luzon in the Philippines
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May 8: A male Craspedisia spatulata spider.
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May 7: the greater noctule bat Nyctalus lasiopterus
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May 6: floodplain around Lake Ira Lalaro in East Timor
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May 5: love dart of the snail Bradybaena similaris
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May 4: axon guidance in Drosophila
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May 3: Copa kei male from Cwebe Nature Reserve
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May 2: dispersal of seeds by the airflow of vehicles
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May 1: holotype of Homo cepranensis
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April 30: Granular corneal dystrophy, a condition caused by a genetic disorder
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April 29: The microbiologist and Nobel laurate Hamilton Othanel Smith.
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April 28: eggs of Pomacea haustrum
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April 27: size of four Geosaurini present during the Kimmeridgian
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April 26: optical flow experienced by a rotating observer
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April 25: The soft coral Briareum violacea.
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April 24: PET scan of a patient with nasopharyngeal cancer
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April 23: lifecycle of Haliclystus antarcticus
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April 22: predicted habitat suitability for the Illacme plenipes millipede.
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April 21: The sea snail Terebra taurina.
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April 20: a model for the early olfaction system
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April 19: The blenny Helcogramma rhinoceros.
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April 18: skeleton of the prehistoric Nimbadon lavarackorum
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April 17: Cucujus haematodes habitus.
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April 16: The polychaete Notopygos ornata.
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April 15: Aquaporin Z, a protein
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April 14: An Erebia sudetica butterfly.
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April 13: An ass's ear abalone, Haliotis asinina.
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April 12: calling song of Magicicada cassini
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April 11: Bornella stellifer, a nudibranch in family Bornellidae
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April 10: A Bradypodion gutturale chameleon.
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April 9: The beetle Notiophilus aquaticus.
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April 7: Shrimp Alpheus with parasite Cryptoniscidae attached
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April 6: CT scan of lung showing Alpha 1-antitrypsin deficiency
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April 5: schematic for a brain-computer interface
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April 4: Enyalioides azulae, a member of the lizard family Hoplocercidae.
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April 3: The blenny Helcogramma inclinata.
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April 2: A mandible of the fossil giraffe Mitilanotherium inexpectatum.
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April 1: A male Aptostichus angelinajolieae spider.
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March 31: Sir Edwin Southern, inventor of the Southern blot.
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March 30: The life cycle of the parasitic nematode Onchocerca volvulus, which causes river blindness.
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March 28:T Cell differentiation
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March 27: increasing reelin changes the morphology of migrating neurons
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March 26: cone of female Ephedra californica
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March 25: Life restoration of Iguanacolossus fortis.
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March 24: Lily Shoals elimia
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March 23: The beetle Phrypeus rickseckeri.
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March 22: Pieter Bleeker (b. 1819), Dutch ichthyologist
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March 21: Images of love darts made by scanning electron microscopy
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March 19: The song of the owl Otus jolandae
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March 18: The moth Panthea acronyctoides.
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March 17: Bone scintigraphy of a patient with psoriatic arthritis in the left elbow.
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March 16: The Termitotrox cupido holotype.
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March 15: Cercopithecus lomamiensis.
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March 14: Phylogenetic tree for Heterobranchia
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March 13: Endocarditis ultrasound
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March 12: Malayatelura rubbing an ant worker
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March 11: The fern Dryopteris macropholis.
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March 10: Escherichia coli life cycle.
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March 9: A Pantopsalis listeri harvestman.
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March 8: Single beating cell at day 5 after VCAM-1 sorting
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March 7: The result of a tonsillectomy.
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March 6: A Prostylotermes termite.
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March 5: Fruitbodies of Boletopsis nothofagi
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March 4: Astronaut Charles Duke with a hammer on the moon
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March 3: A Soay sheep.
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March 2: In progeria patients, the cell nucleus has dramatically aberrant morphology (bottom, right) rather than the uniform shape typically found in healthy individuals (top, right).
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March 1: The snail Opisthostoma everettii.
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February 28: Adult Gelis apterus female in lateral view.
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February 25: The Sierra Madre on the Philippine island of Luzon.
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February 24: The bivalve Xylophaga dorsalis.
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February 23: The sea slug Aplysia punctata.
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February 21: Incidence of cholangiocarcinoma and Opisthorchis viverrini in Thailand from 1990–2001.
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February 20: A Colias myrmidone butterfly.
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February 19: The spider Selenops petrunkevitchi.
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February 17: A patient's hands with multiple xanthomas.
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February 16: Leukemia cells.
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February 15: The sea urchin Asterechinus elegans.
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February 14: The dinosaur Sinocalliopteryx gigas feeding on the bird Confuciusornis.
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February 13: A juvenile Zodarion styliferum spider.
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February 12: Monomeric and dimeric structures of human beta-defensin HBD-2.
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February 11: The longhorn beetle Leptostylopsis annulipes.
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February 10: Female cone of Ephedra intermedia.
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February 9: Nobel laureate John Sulston.
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February 8: Detail of a female Apocephalus borealis fly with its ovipositor.
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February 7: The water snail Terebralia palustris.
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February 6: The ground beetle Cychrus tuberculatus.
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February 5: A newborn rhesus macaque imitates tongue protrusion.
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February 3: A Tasmanian devil with Devil facial tumour disease.
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February 2: Human embryonic stem cells and neurons derived from them.
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February 1: Comparison of the huge claws of the extinct eagle Harpagornis moorei with those of its close relative Hieraaetus morphnoides.
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January 30: A Common Myna.
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January 28: Australian rock art depicting long-beaked echidnas.
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January 27: Mating position of Latrodectus bishopi spiders (female in white, male in black).
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January 26: The frog Boophis williamsi.
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January 25: A digestive tubule cell of the sea slug Elysia clarki with chloroplasts (C) and nucleus (N). Scale bar: 3 µm.
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January 24: Artistic reconstruction of Wintonotitan.
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January 23: Song of the 17-year cicada Magicicada septendecula.
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January 22: The ground beetle Broscus cephalotes.
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January 21: The gastrotrich Thaumastoderma ramuliferum. Scale bar: 20 µm.
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January 20: The lizard Kentropyx calcarata.
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January 19: A human karyogram with a ring chromosome.
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January 18: Atelopus franciscus advertisement call
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January 17: The butterfly Aricoris propitia attended by the fire ant Solenopsis saevissima.
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January 16: zebra finch song
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January 15: Oxydromus pugettensis, a bristle worm.
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January 14: A Lamellibrachia luymesi tube worm.
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January 13: The ground beetle Calosoma sycophanta.
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January 12: Motion tracking of two pianists' fingers playing the same piece (slow motion, no sound).
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January 11: Panoramic view of the Raja Ampat Islands, Indonesia.
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January 8: A congenital melanocytic nevus.
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January 6: Trachemys adiutrix turtles in Lençóis Maranhenses National Park, Brazil.
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January 5: Mourning Dove vocalizations.
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January 3: Suggested "Out of Africa" migratory routes according to mitochondrial DNA.
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January 2: Craig Venter.
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January 1: Two specimens of the flatworm Pseudobiceros bedfordi about to engage in penis fencing.