title: The molecular-weight factor in the biliary excretion of quaternary ammonium cations.
mesh_terms: D000818:Animals; D001646:Bile / Q000032:analysis*; D002247:Carbon Isotopes; D002414:Cations, Monovalent; D006168:Guinea Pigs; D008970:Molecular Weight; D000644:Quaternary Ammonium Compounds / Q000378:metabolism*; D011817:Rabbits; D051381:Rats
chemical_list: D002247:Carbon Isotopes; D002414:Cations, Monovalent; D000644:Quaternary Ammonium Compounds