The 9-day previllous embryo (bilaminar blastocyst)
Stage 5
Age 9 days
Carnegie collection 8004
Hertig and Rock, 1945.
Keywords: amnion, amniotic cavity, blastocystic cavity (blastocoele), cytotrophoblast, embryonic disc, embryonic endoderm, endometrial epithelium, endometrial stroma, epiblast, extra-embryonic mesoblast, maternal blood cells, sinusoid, syncytiotrophoblast, trophoblast lacunae, umbilical vesicle cavity, uterine cavity, uterine gland
Source: Atlas of Human Embryos.