[Electron microscopic study of the differentiation of the digestive tract of the human fetus. (1) Ultrastructure of villi in the human fetus].
D002454:Cell Differentiation; D004847:Epithelial Cells; D005865:Gestational Age; D006801:Humans; D007421:Intestine, Small / Q000166:cytology / Q000196:embryology*; D008854:Microscopy, Electron; D010873:Pinocytosis