[On the problem of the mechanism of the formation of the X-factor during the action of acetylcholine on the frog heart].
D000109:Acetylcholine; D000818:Animals; D001001:Anura; D006321:Heart / Q000494:pharmacology*; D001556:Hexachlorocyclohexane
D001556:Hexachlorocyclohexane; C034873:hexachlorocyclohexane x-factor; D000109:Acetylcholine
HEART/pharmacology