title: Ultrastructural observations on amniotic fluid cells.
mesh_terms: D000653:Amniotic Fluid / Q000166:cytology*; D004847:Epithelial Cells; D005260:Female; D005333:Fetus / Q000033:anatomy & histology; D005865:Gestational Age; D006652:Histological Techniques; D006801:Humans; D008854:Microscopy, Electron; D011247:Pregnancy; D012867:Skin / Q000166:cytology / Q000196:embryology*; D013194:Staining and Labeling