title: Ultrastructure of the mouse epididymal duct with special reference to the regional differences of the principal cells.
mesh_terms: D000818:Animals; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D004822:Epididymis / Q000166:cytology / Q000502:physiology / Q000648:ultrastructure*; D004848:Epithelium / Q000648:ultrastructure; D008297:Male; D051379:Mice / Q000033:anatomy & histology*; D008815:Mice, Inbred Strains; D008854:Microscopy, Electron; D009940:Organoids / Q000648:ultrastructure