The membrane of cells that forms the wall of a blastocyst during early pregnancy, providing nutrients to the embryo and later developing into part of the placenta
{i} external layer of cells in a mammalian embryo involved in the nourishment of the embryo (Biology, Embryology)
the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall; "after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta
embriyonun beslenmesini temin eden blastosist hücrelerinin dış tabakası
الواصلة
emb·ri·yo·nun bes·len·me·si·ni te·min e·den blas·to·sist hüc·re·le·ri·nin dış ta·ba·ka·sı