Image Gallery
Free Blastocyst (without zona)
![Free Blastocyst (without zona) [Click for next image]](/images/prenatal_unlabeled_655/free-blastocyst-without-zona-.jpg "Click for next image")
| 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. |
Hatched Blastocyst
Hatched Blastocyst
Free Blastocyst (without zona)
Embryo Cross Section 8-9 Days
Embryo at About 11 Days
Tube Shaped Heart
