title: Prevention of the negative chronotropic effect of adenosine by caffeine.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000227:Adenine Nucleotides / Q000494:pharmacology; D000251:Adenosine Triphosphatases / Q000494:pharmacology; D000818:Animals; D002110:Caffeine / Q000494:pharmacology*; D004285:Dogs; D008722:Methods; D009705:Nucleosides / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D012849:Sinoatrial Node / Q000187:drug effects*; D013806:Theophylline / Q000494:pharmacology; D014628:Vagotomy
chemical_list: D000227:Adenine Nucleotides; D009705:Nucleosides; D002110:Caffeine; D013806:Theophylline; D000251:Adenosine Triphosphatases; D000109:Acetylcholine