[Electron microscopic study of differentiation of the mesenchymal cells of human skin. 3. Differentiation of the arrector pilorum forming smooth muscle].
D002454:Cell Differentiation; D006801:Humans; D007231:Infant, Newborn; D008854:Microscopy, Electron; D009130:Muscle, Smooth / Q000166:cytology* / Q000196:embryology; D012867:Skin / Q000166:cytology*