بنك الأسئلة المجّاني للاختبارات الوطنيّة SMLE و SNLE

sequential influence of estrogens and progesterone on the stromal cells of the endometrium enables their transformation into decidual cells.decidual cells, Large, pale cells rich in glycogen. The stimulus for transformation is the implantation of the blastocyst. Although the precise function of these cells is not known, it is clear that they provide a favorable environment for the nourishment of the embryo and that they create aspecialized layer that facilitates the separation of the placenta from the uterine wall at the termination of pregnancy.

Reference

Ross Histology Text and Atlas 6th edition, chapter 23, page 850.