title: Lowered sensitivity to acetylcholine in hearts from cold-acclimated rats and frogs.
mesh_terms: D000064:Acclimatization; D000109:Acetylcholine / Q000008:administration & dosage / Q000494:pharmacology*; D000818:Animals; D001001:Anura; D003080:Cold Temperature; D003864:Depression, Chemical; D004305:Dose-Response Relationship, Drug; D006321:Heart / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects*; D007275:Injections, Intravenous; D008297:Male; D051381:Rats; D013268:Stimulation, Chemical
chemical_list: D000109:Acetylcholine