Myocardial muscarinic acetylcholine receptor: choline and tris unmask heterogeneity of antagonist binding sites.
D000818:Animals; D002794:Choline / Q000494:pharmacology*; D004285:Dogs; D006325:Heart Atria / Q000378:metabolism; D007700:Kinetics; D009206:Myocardium / Q000378:metabolism*; D011813:Quinuclidinyl Benzilate / Q000378:metabolism; D011950:Receptors, Cholinergic / Q000378:metabolism*; D011976:Receptors, Muscarinic / Q000187:drug effects / Q000378:metabolism*; D014325:Tromethamine / Q000494:pharmacology*
D011950:Receptors, Cholinergic; D011976:Receptors, Muscarinic; D014325:Tromethamine; D011813:Quinuclidinyl Benzilate; D002794:Choline