Evolution of the endoplasmic reticulum during rat spermiogenesis.
D000818:Animals; D004721:Endoplasmic Reticulum / Q000648:ultrastructure*; D006056:Golgi Apparatus / Q000648:ultrastructure; D008297:Male; D051381:Rats; D013087:Spermatids / Q000648:ultrastructure; D013091:Spermatogenesis