Ultrastructure of chorionic villi from a four-somite human embryo.
D001485:Basement Membrane; D001775:Blood Circulation; D002196:Capillaries; D002462:Cell Membrane; D003593:Cytoplasm; D005314:Embryonic and Fetal Development; D004848:Epithelium; D005321:Extraembryonic Membranes / Q000166:cytology*; D006801:Humans; D008854:Microscopy, Electron; D010873:Pinocytosis; D013997:Time Factors