title: Discrimination between the pre- and post-synaptic components of PGI2 action in guinea-pig duodenum.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004386:Duodenum / Q000187:drug effects*; D011464:Epoprostenol / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D006168:Guinea Pigs; D006426:Hemicholinium 3 / Q000494:pharmacology; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D013779:Tetrodotoxin / Q000494:pharmacology
chemical_list: D006426:Hemicholinium 3; D013779:Tetrodotoxin; D001285:Atropine; D011464:Epoprostenol; D000109:Acetylcholine