title: Absence of morphine-binding activity in serum from heroin addicts.
mesh_terms: D001666:Binding Sites, Antibody; D001798:Blood Proteins; D003932:Heroin; D006556:Heroin Dependence / Q000150:complications / Q000276:immunology; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D009020:Morphine; D009404:Nephrotic Syndrome / Q000209:etiology / Q000276:immunology; D011485:Protein Binding; D019966:Substance-Related Disorders / Q000276:immunology*
chemical_list: D001798:Blood Proteins; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D003932:Heroin; D009020:Morphine