title: Polymorphic O-demethylation of codeine.
mesh_terms: D003061:Codeine / Q000378:metabolism*; D003915:Dextromethorphan / Q000378:metabolism*; D006801:Humans; D007981:Levorphanol / Q000031:analogs & derivatives*; D010088:Oxidoreductases / Q000235:genetics*; D010090:Oxidoreductases, O-Demethylating / Q000235:genetics*; D011110:Polymorphism, Genetic
chemical_list: D007981:Levorphanol; D003915:Dextromethorphan; D010088:Oxidoreductases; D010090:Oxidoreductases, O-Demethylating; D003061:Codeine