title: [Effect of nicotinamide on the rabbit sinus node cell action potential and analysis of its mechanism].
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D009536:Niacinamide / Q000494:pharmacology*; D011817:Rabbits; D012849:Sinoatrial Node / Q000187:drug effects*; D014700:Verapamil / Q000037:antagonists & inhibitors
chemical_list: D009536:Niacinamide; D014700:Verapamil