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Carnegie Stage   Figure

Trophoblast projection

Trophoblast projection

In vitro hatched blastocyst showing a trophoblastic projection (square in top left photograph). The hatched stage 3 embryo produces small, fimbriated projections that exhibit amoeboid movement, suggesting they are seeking an implantation site.

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


Keywords: amoeboid movement, hatched blastocyst, implantation site, trophoblast projection


Source: The Virtual Human Embryo.