title: Enzyme distribution in "naturally-decapitated" bull spermatozoa: acetylcholinesterase, adenylpyrophosphatase and adenosinetriphosphatase.
mesh_terms: D000110:Acetylcholinesterase / Q000378:metabolism*; D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D002417:Cattle; D002499:Centrifugation, Density Gradient; D005407:Flagella / Q000201:enzymology; D008297:Male; D009068:Movement; D010770:Phosphotransferases / Q000378:metabolism*; D013094:Spermatozoa / Q000201:enzymology*; D014461:Ultracentrifugation
chemical_list: D010770:Phosphotransferases; D000110:Acetylcholinesterase; D000251:Adenosine Triphosphatases