title: Proceedings: Effects of atropine on membrane currents and twitch tension in bullfrog atrium.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001001:Anura; D001285:Atropine / Q000494:pharmacology*; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria / Q000187:drug effects; D008297:Male; D008564:Membrane Potentials / Q000187:drug effects*; D011892:Rana catesbeiana
chemical_list: D001285:Atropine; D000109:Acetylcholine