On the configuration of the plasma membrane of the mature spermatozoon.
D000818:Animals; D002462:Cell Membrane; D004822:Epididymis / Q000166:cytology; D006652:Histological Techniques; D006801:Humans; D008297:Male; D008722:Methods; D051379:Mice; D008854:Microscopy, Electron; D011817:Rabbits; D012661:Semen; D013094:Spermatozoa / Q000166:cytology*