11. Epiblast migrates between the epiblastic disc and trophoblast . 12. The fetal cells that implant into the uterine wall are known as the trophoblast . 13. The trophoblast therefore has the capacity to suppress the immune response against foreign cells. 14. In culture, trophoblast CRH is inhibited by progesterone, which remains high throughout pregnancy. 15. The trophoblast gives rise to the placenta. 16. Rather, the inner cell mass rotates inside the trophoblast to align to the apposition. 17. Occasionally there is impaired trophoblast invasion that results in inadequate alterations to the uterine spiral arteries. 18. In addition, HAND1 is uniquely expressed in trophoblasts and is essential for early trophoblast differentiation. 19. In addition, HAND1 is uniquely expressed in trophoblasts and is essential for early trophoblast differentiation. 20. The trophoblast cells will eventually give rise to the embryonic contribution to the placenta called the chorion.
