Ultrastructure of the placenta and fetal membranes of the dog. I. The placental labyrinth.
D000818:Animals; D004285:Dogs; D004721:Endoplasmic Reticulum; D005260:Female; D008854:Microscopy, Electron; D010920:Placenta / Q000166:cytology*; D011247:Pregnancy; D014327:Trophoblasts / Q000166:cytology