title: Studies concerning the formation of vaginal plug in laboratory animals and its suitability for demonstration the ultrastructure of spermatozoa.
mesh_terms: D000818:Animals; D003307:Copulation / Q000502:physiology*; D006224:Cricetinae; D005260:Female; D006168:Guinea Pigs; D008297:Male; D051379:Mice; D008855:Microscopy, Electron, Scanning; D051381:Rats; D012661:Semen / Q000502:physiology*; D013094:Spermatozoa / Q000648:ultrastructure*; D014621:Vagina