The circular muscle of the vas deferens of the guinea-pig.
D000818:Animals; D004558:Electric Stimulation; D004594:Electrophysiology; D004837:Epinephrine / Q000494:pharmacology; D006145:Guanethidine / Q000494:pharmacology; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects; D009132:Muscles / Q000502:physiology*; D009638:Norepinephrine / Q000494:pharmacology; D013779:Tetrodotoxin / Q000494:pharmacology; D014649:Vas Deferens / Q000502:physiology*
D013779:Tetrodotoxin; D009638:Norepinephrine; D004837:Epinephrine; D006145:Guanethidine