[On the biochemical nature of the X-factor released by the frog heart under the effect of acetylcholine].
D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D001001:Anura; D006321:Heart / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism*; D014500:Uracil Nucleotides / Q000378:metabolism*
D014500:Uracil Nucleotides; D000109:Acetylcholine
O biokhimicheskoi prirode X-faktora, vydelialiushchegosia iz serdtsa liagushki pri deistvii atsetilkholina.