title: Potentiating effects of high concentration of sodium nitroprusside on the contraction of guinea-pig vas deferens.
mesh_terms: D000818:Animals; D002217:Carbachol / Q000494:pharmacology; D004357:Drug Synergism; D005292:Ferricyanides / Q000494:pharmacology*; D006168:Guinea Pigs; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D009599:Nitroprusside / Q000494:pharmacology*; D009638:Norepinephrine / Q000494:pharmacology; D011188:Potassium / Q000494:pharmacology; D014649:Vas Deferens / Q000502:physiology*
chemical_list: D005292:Ferricyanides; D009599:Nitroprusside; D002217:Carbachol; D011188:Potassium; D009638:Norepinephrine