File:Staphylococcus aureus colony morphology on blood agar.jpg
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Staphylococcus aureus is a Gram-positive bacterium known for its distinctive colony morphology on blood agar.
Summary[edit]
| Description |
English: Staphylococcus aureus is a Gram-positive bacterium known for its distinctive colony morphology on blood agar. When growing on blood agar, Staphylococcus aureus colonies typically display the following characteristics: Size-Staphylococcus aureus colonies can vary in size, but they are often medium-sized. They are larger than many other bacterial colonies commonly found on blood agar.Shape- The colonies are round and convex, often with a raised or slightly elevated appearance. They do not typically appear flat or wrinkled.
Color- Staphylococcus aureus colonies on blood agar have a characteristic golden-yellow to golden-orange color. This coloration is often described as "buttery" or "creamy." Opacity- These colonies are opaque, meaning they are not transparent and do not allow light to pass through. Hemolysis-Staphylococcus aureus is known for its ability to exhibit beta-hemolysis on blood agar. This means that the bacterium produces hemolysins that completely lyse (break down) red blood cells in the agar around the colony. As a result, there is a clear zone or "halo" surrounding the colony due to the lysis of red blood cells. Texture- Staphylococcus aureus colonies have a smooth and glistening appearance. They do not typically exhibit rough or roughened textures. |
| Date | |
| Source | Own work |
| Author | Ajay Kumar Chaurasiya |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:28, 2 September 2023 | | 4,160 × 2,340 (3.17 MB) | Ajay Kumar Chaurasiya (talk | contribs) | Uploaded own work with UploadWizard |
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