title: [Contraction and relaxation of vascular smooth muscle. Comparison of the origins of calcium employed in high potassium contraction and norepinephrine contraction].
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D004285:Dogs; D066298:In Vitro Techniques; D008638:Mesenteric Arteries; D009119:Muscle Contraction / Q000187:drug effects*; D009126:Muscle Relaxation / Q000187:drug effects; D009130:Muscle, Smooth / Q000502:physiology*; D014700:Verapamil / Q000494:pharmacology*
chemical_list: D014700:Verapamil; D002118:Calcium