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Embryo Cross Section 8-9 Days
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Note:The inner cell mass has divided into the epiblast and the hypoblast.Label Key:1. amniotic ectoderm 2. epiblast 3. amniotic cavity 4. hypoblast | ||
| All ages referenced to fertilization, not last menstrual period. |
Hatched Blastocyst
Free Blastocyst (without zona)
Embryo Cross Section 8-9 Days
Embryo at About 11 Days
Tube Shaped Heart
Three-Week Embryo
