title: Ultrastructure of the human vas deferens.
mesh_terms: D003094:Collagen / Q000032:analysis; D006801:Humans; D008297:Male; D008853:Microscopy; D008854:Microscopy, Electron; D014649:Vas Deferens / Q000032:analysis / Q000166:cytology* / Q000294:innervation
chemical_list: D003094:Collagen