[Electron microscopy of trophoblasts in the placenta of the hairless mouse].
D000818:Animals; D004847:Epithelial Cells; D005260:Female; D006197:Hair; D051379:Mice; D008854:Microscopy, Electron; D010920:Placenta / Q000166:cytology*; D011247:Pregnancy; D014327:Trophoblasts / Q000166:cytology*