Fig. 12. High power TEM of the same contact area of the stage 4 embryo in vitro shown in Figure 10. Measuring bar = 700 nm. See arrow in Figure 10. Notice apical junctional complexes (arrows) and desmosomes between the cultured endometrial epithelium (E) and a trophoblast cell (T). (From: Bentin-Ley et al., 2000. Reproduced with permission of the Society for Reproduction and Fertility.)