a.special receptors on the endometrium to which the blastocyst attaches
b.enzymes secreted by the trophoblast, which erode an area of the endometrium for entry of the embryo
c.special phagocytic cells in the endometrium , which engulfs the embryo
d.the sticky coat of the zone pellucida, which adheres to the endometrium
e.the action of hCG secreted by the embryo.
enzymes secreted by the trophoblast, which erode an area of the endometrium for entry of the embryo
Please let me know if you have any other questions and best me if you are satisfactory.
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