title: Michaelis-Menten kinetics of calcium dependence of sympathetic neurotransmitter secretion in guinea-pig vas deferens: comparison between effects of phentolamine and of tetraethylammonium.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D006168:Guinea Pigs; D007700:Kinetics; D008297:Male; D009638:Norepinephrine / Q000378:metabolism; D010646:Phentolamine / Q000494:pharmacology*; D013757:Tetraethylammonium Compounds / Q000494:pharmacology*; D014316:Tritium; D014649:Vas Deferens / Q000378:metabolism*
chemical_list: D013757:Tetraethylammonium Compounds; D014316:Tritium; D002118:Calcium; D009638:Norepinephrine; D010646:Phentolamine