File:Early-detection-and-staging-of-spontaneous-embryo-resorption-by-ultrasound-biomicroscopy-in-murine-1477-7827-12-38-S4.ogv

English: Additional file 4: Movie S4 R16 and R17 day 11, first and second scan. The normal embryo has increased in size. In contrast, the R16 is now clearly in the process of resorption: the heart is compressed by pericardial effusion and a heartbeat is barely detectable. The yolk sac is visible as a shrivelled membrane after having lost its close connection to the Reichert's membrane and underlying maternal mucosa. R17 has died. The amniotic cavity is small and the yolk sac has also lost its balloon like shape, resulting in a shriveled yolk sac membrane. In the second scan, 3 hours later, the morphology of the normal embryo is not altered. In R16, a heartbeat cannot be detected. The embryo of R17 has completely lost its original morphology and its tissue looks condensed. The embryo seems to be outside its original cavity in the uterine lumen. During collection of the resorption site, the embryo was lost. Only the Reichert's membrane was found in the uterine lumen.