title: Cation-dependence of phosphatase activity in bull spermatozoa.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D002118:Calcium / Q000494:pharmacology; D002417:Cattle; D008274:Magnesium / Q000494:pharmacology; D008297:Male; D011188:Potassium / Q000494:pharmacology; D012964:Sodium / Q000494:pharmacology; D013094:Spermatozoa / Q000187:drug effects / Q000201:enzymology*
chemical_list: D012964:Sodium; D000251:Adenosine Triphosphatases; D008274:Magnesium; D011188:Potassium; D002118:Calcium