Very high power SEM of the contact area of a stage 4 embryo in vitro. Measuring bar =15 µm. E, endometrial epithelial cell; T, trophoblast cell. several endometrial pinopodes (P) are in contact with the trophoblast surface of the blastocyst.
From: Bentin-Ley et al., 1999. Reproduced with permission of the publisher, Oxford University Press.
Keywords: blastocyst(s), endometrial epithelial cell, pinopode, stage 4 embryo, trophoblast, trophoblast cells
Source: The Virtual Human Embryo.