Regional differentiation in the heads of spermatozoa of rabbit, man and bull.
D000818:Animals; D002417:Cattle; D002462:Cell Membrane; D002467:Cell Nucleus; D002843:Chromatin; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D008870:Microtubules; D011817:Rabbits; D013045:Species Specificity; D013094:Spermatozoa / Q000166:cytology*
D002843:Chromatin