title: Comments on the action of quaternary ammonium compounds at the receptor site.
mesh_terms: D000109:Acetylcholine; D001665:Binding Sites; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology*; D009435:Synaptic Transmission / Q000187:drug effects*; D013757:Tetraethylammonium Compounds / Q000494:pharmacology
chemical_list: D000644:Quaternary Ammonium Compounds; D013757:Tetraethylammonium Compounds; D000109:Acetylcholine