Slideshow: Entire Image Gallery by EHD
Four-Cell Embryo
#43, Slide 20 of 312
48 hours
| Source: Centro Riproduzione Assistita, Catania, Italy. |
Label Key:1. blastomere #1 2. blastomere #2 3. blastomere #3 4. blastomere #4 5. zona pellucida 6. inside border of zona pellucida 7. perivitelline space |
| All ages referenced to fertilization, not last menstrual period. |
