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The expression of c-myc in cervical epithelium cells detected by immunohistochemical test. The standard of c-myc positive reaction: the reaction product of c-myc positive reaction was brown particles, distributed in cell nucleus, it was regarded as positive expression if the percentage of possive cells was more than 30% under 10 high power fields. (A: normal cervix tissure; B: CIN tissure; C: cervical cancer tissure).
