title: Effect of heparin on the sensitivity of frog's rectus abdominis muscle to acetylcholine.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D001001:Anura; D006493:Heparin / Q000494:pharmacology*; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects*; D009132:Muscles / Q000187:drug effects*
chemical_list: D006493:Heparin; D000109:Acetylcholine