title: [Exfoliative cytology from the urinary tract of workers exposed to benzidine--a 4-year observation].
mesh_terms: D001560:Benzidines / Q000009:adverse effects*; D004781:Environmental Exposure; D006801:Humans; D009784:Occupational Diseases / Q000139:chemically induced / Q000652:urine; D009787:Occupational Medicine; D001749:Urinary Bladder Neoplasms / Q000139:chemically induced / Q000652:urine; D014556:Urine / Q000166:cytology*
chemical_list: D001560:Benzidines