title: [Ultrastructural studies of the cell membrane].
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002462:Cell Membrane / Q000648:ultrastructure*; D005613:Freeze Etching; D008297:Male; D051379:Mice; D008867:Microtomy / Q000379:methods; D008871:Microvilli / Q000648:ultrastructure; D051381:Rats; D013094:Spermatozoa / Q000648:ultrastructure