title: Activators of the ATP-dependent surface reaction in the apical cell membrane of the bull-sperm head, causing head-to-head association.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism* / Q000494:pharmacology; D000818:Animals; D002021:Buffers; D002118:Calcium / Q000494:pharmacology*; D002417:Cattle; D002449:Cell Aggregation; D006851:Hydrochloric Acid; D008274:Magnesium / Q000494:pharmacology*; D008297:Male; D008345:Manganese / Q000494:pharmacology*; D010042:Ouabain / Q000494:pharmacology; D010710:Phosphates; D011188:Potassium; D012964:Sodium; D013094:Spermatozoa / Q000187:drug effects / Q000378:metabolism*; D014325:Tromethamine
chemical_list: D002021:Buffers; D010710:Phosphates; D014325:Tromethamine; D008345:Manganese; D010042:Ouabain; D000255:Adenosine Triphosphate; D012964:Sodium; D008274:Magnesium; D006851:Hydrochloric Acid; D011188:Potassium; D002118:Calcium