title: The role of calcium, potassium and sodium ions on the noradrenaline induced contraction in the vas deferens isolated from guinea-pigs.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007477:Ions; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology; D011188:Potassium / Q000494:pharmacology*; D012964:Sodium / Q000494:pharmacology*; D014649:Vas Deferens / Q000187:drug effects*
chemical_list: D007477:Ions; D012964:Sodium; D011188:Potassium; D002118:Calcium; D009638:Norepinephrine