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Details of the contact zone

TEM of a stage 4 embryo in vitro showing details of the contact zone between the endometrial cells (EC) and the cytotrophoblast (CTr). Measuring bar = 100 µm. The cultured endometrial cells are stacked. The cytotrophoblasts have long protrusions (arrows) that extend into the spaces between the endometrial cells.

From: Lindenberg et al., 1986. Reproduced with permission of the publisher, Oxford University Press.

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Keywords: contact area(s), cytotrophoblast, endometrial cells

Source: The Virtual Human Embryo.