title: Competitive antagonizable effects of calcium on the isolated taenia coli of guinea pig.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D003106:Colon / Q000187:drug effects*; D004336:Drug Antagonism; D006168:Guinea Pigs; D009119:Muscle Contraction / Q000187:drug effects; D009132:Muscles / Q000187:drug effects*; D014700:Verapamil / Q000494:pharmacology*
chemical_list: D014700:Verapamil; D002118:Calcium