title: Active state in the smooth muscle of the rat portal vein in relation to electrical activity and isometric force.
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D002118:Calcium / Q000494:pharmacology; D004594:Electrophysiology; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000502:physiology*; D011169:Portal Vein / Q000502:physiology*; D011188:Potassium / Q000494:pharmacology; D051381:Rats; D013997:Time Factors
chemical_list: D011188:Potassium; D002118:Calcium