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The surface of an embryo attached to a monolayer culture

High power SEM of the surface of a stage 4 embryo in vitro attached to a monolayer culture of endometrial cells. The mural trophoblast of the blastocyst (B) has abundant microvilli.

From: Lindenberg, 1991. Reproduced with permission of the publisher, Elsevier.

Keywords: blastocyst(s), endometrial cells, microvilli, mural trophoblast, stage 4 embryo

Source: The Virtual Human Embryo.