title: Effects of norepinephrine on tissues of the frog heart atrium poisoned by tetrodotoxin.
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000818:Animals; D001001:Anura; D016275:Atrial Function; D004553:Electric Conductivity; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D009638:Norepinephrine / Q000494:pharmacology*; D012964:Sodium / Q000502:physiology; D013779:Tetrodotoxin / Q000494:pharmacology*
chemical_list: D013779:Tetrodotoxin; D012964:Sodium; D009638:Norepinephrine