title: The sinus node electrogram rediscovered.
authors.forename: B F
authors.initials: BF
authors.lastname: Hoffman
mesh_terms: D000818:Animals; D001683:Biological Clocks / Q000187:drug effects / Q000502:physiology; D002121:Calcium Channel Blockers / Q000494:pharmacology; D004594:Electrophysiology; D006801:Humans; D008839:Microelectrodes; D009543:Nifedipine / Q000494:pharmacology; D011817:Rabbits; D012849:Sinoatrial Node / Q000187:drug effects / Q000502:physiology*; D026941:Sodium Channel Blockers; D013779:Tetrodotoxin / Q000494:pharmacology
chemical_list: D002121:Calcium Channel Blockers; D026941:Sodium Channel Blockers; D013779:Tetrodotoxin; D009543:Nifedipine