Pyrrolizidine alkaloids: analysis of spasmolytic activity in the guinea-pig ileum.
D000818:Animals; D001464:Barium / Q000037:antagonists & inhibitors / Q000494:pharmacology; D002217:Carbachol / Q000037:antagonists & inhibitors / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004336:Drug Antagonism; D005260:Female; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D009994:Osmolar Concentration; D010276:Parasympatholytics / Q000494:pharmacology*; D011763:Pyrrolizidine Alkaloids / Q000494:pharmacology*
D010276:Parasympatholytics; D011763:Pyrrolizidine Alkaloids; D001464:Barium; D002217:Carbachol