Endometrium

Science / Biology / Endometrium: The inner lining of the uterus.

Trophoblast

Science / Biology / Trophoblast: The outer layer of cells of a blastocyst that adhere to the endometrium during implantation. MORE

Menstruation

Science / Biology / Menstruation: The process in which the uterine endometrium breaks down and sheds cells, resulting in bleeding; occurs approximately once a month. The first day marks the beginning of the menstrual and ovarian cycle MORE

Implantation

Science / Biology / Implantation: The process in which the blastocyst embeds in the endometrium. MORE

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