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Schematic of trophoblast cell junctions

Close-up view of a stage 3 embryo in vitro showing a schematic of trophoblast cell junctions. Extremely close connections called tight junctions are formed between the membranes of trophoblastic cells. Disk-shaped junctions called desmosomes also form between trophoblast cell membranes.

From: Veeck and Zaninovic´, 2003. Reproduced with permission of the publisher, Francis and Taylor Group.

Keywords: cell membrane, desmosome, tight junction, trophoblast, trophoblast cells

Source: The Virtual Human Embryo.