Tucek, S Pertussis toxin inhibits negative inotropic and negative chronotropic muscarinic cholinergic effects on the heart. [electronic resource] - Pflugers Archiv : European journal of physiology Feb 1987 - 167-72 p. digital Publication Type: Journal Article ISSN: 0031-6768 Standard No.: 10.1007/BF00581347 doi Subjects--Topical Terms: Adenylate Cyclase ToxinAnimalsCarbachol--pharmacologyCyclic AMP--metabolismDepression, ChemicalHeart Rate--drug effectsIsoproterenol--pharmacologyMaleMyocardial Contraction--drug effectsParasympathomimetics--antagonists & inhibitorsPertussis ToxinRatsRats, Inbred StrainsReceptors, Muscarinic--physiologyVirulence Factors, Bordetella--pharmacology