Slideshow: Early Events
Free Blastocyst (without zona)
#57, Slide 22 of 24
6 days
| Source: Centro Riproduzione Assistita, Catania, Italy. |
Note:This close-up reveals the absence of the zona and the large size of the blastocyst cavity. The inner cell mass is tiny by comparison.Label Key:1. inner cell mass 2. blastocyst cavity |
| All ages referenced to fertilization, not last menstrual period. |
