title: The fine structure of the placenta of the impala Aepyceros melampus (Lichtenstein, 1812).
abstract: The ultrastructure of the placenta was investigated at various stages of gestation. The nonplacental areas of the maternal epithelium continue to show considerable secretory activity long after implantation. The placental barrier is of the epithelio-chorial type.
mesh_terms: D000818:Animals; D000866:Antelopes / Q000033:anatomy & histology*; D001188:Artiodactyla / Q000033:anatomy & histology*; D047108:Embryonic Development; D004847:Epithelial Cells; D004848:Epithelium / Q000648:ultrastructure; D005260:Female; D008431:Maternal-Fetal Exchange; D010920:Placenta / Q000648:ultrastructure*; D011247:Pregnancy; D014327:Trophoblasts / Q000648:ultrastructure