title: Variations in external calcium concentration and sensitivity of venous smooth muscle to temperature changes.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D004285:Dogs; D004558:Electric Stimulation; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology*; D009638:Norepinephrine / Q000494:pharmacology; D013696:Temperature; D014680:Veins / Q000187:drug effects / Q000502:physiology*
chemical_list: D002118:Calcium; D009638:Norepinephrine