SCE frequencies were studied in 18 selected untreated schizophrenia patients and 25 healthy persons to explore the interrelationship between schizophrenia and the factors which might result in DNA damage. The results indicated that SCE frequency was significantly higher in the schizophrenia group than in the control ( P<0.05) . The increase could be related to schizophrenia. No significant differences were found between the patients' sexes、 ages、 clinical subtypes or the stages of the Gisease. Genetical and...