title: [Cardiac action of crystalline tetrodotoxin. 3. Effects on the extension of non-reacting period of the isolated atria].
mesh_terms: D000818:Animals; D001145:Arrhythmias, Cardiac / Q000188:drug therapy; D004558:Electric Stimulation; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D010672:Phenytoin / Q000494:pharmacology; D011343:Procaine / Q000494:pharmacology; D011802:Quinidine / Q000494:pharmacology; D013779:Tetrodotoxin / Q000494:pharmacology; D014118:Toxins, Biological / Q000494:pharmacology*
chemical_list: D014118:Toxins, Biological; D013779:Tetrodotoxin; D011343:Procaine; D010672:Phenytoin; D011802:Quinidine