title: Excretion of methadone in semen from methadone addicts; comparison with blood levels.
mesh_terms: D000328:Adult; D006801:Humans; D007314:Insemination; D008297:Male; D008691:Methadone / Q000097:blood / Q000378:metabolism*; D012661:Semen / Q000378:metabolism*
chemical_list: D008691:Methadone