title: Heart atrial cholinergic receptor sites show greater affinity towards agonist compared to ventricular sites.
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004285:Dogs; D006168:Guinea Pigs; D006325:Heart Atria / Q000378:metabolism*; D006352:Heart Ventricles / Q000378:metabolism*; D066298:In Vitro Techniques; D008861:Microsomes / Q000378:metabolism; D009928:Organ Specificity; D010277:Parasympathomimetics / Q000378:metabolism*; D011817:Rabbits; D051381:Rats; D011950:Receptors, Cholinergic / Q000378:metabolism*; D013045:Species Specificity
chemical_list: D010277:Parasympathomimetics; D011950:Receptors, Cholinergic; D001285:Atropine