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• 03:42, 24 June 2023 Robinr78 talk contribs created page Blastocyst (Created page with "{{Header| blastocyst 06/23}} The '''blastocyst''' is a structure formed in the early embryonic development of mammals. It possesses an inner cell mass (ICM) also known as the embryoblast which subsequently forms the embryo, and an outer layer of trophoblast cells called the trophectoderm. This layer surrounds the inner cell mass and a fluid-filled cavity known as the blastocoel. In the late blastocyst the trophectoderm is known as the trophoblast. The trophoblast gives...")