title: A note of the dual effect of prostaglandin E 1  on the responses of the guinea-pig vas deferens to nerve stimulation.
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000818:Animals; D004558:Electric Stimulation; D005071:Evoked Potentials / Q000187:drug effects; D006168:Guinea Pigs; D008297:Male; D009043:Motor Activity; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology; D009469:Neuromuscular Junction / Q000187:drug effects*; D011453:Prostaglandins / Q000494:pharmacology*; D011955:Receptors, Drug; D014649:Vas Deferens / Q000294:innervation*
chemical_list: D011453:Prostaglandins; D011955:Receptors, Drug