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Specimens of Bladder Cancer. A = normal Rb heterogenous nuclear staining in less than 50% of tumor cells invasive carcinoma from non-HCV infected patients, B = altered Rb expression; homogenous strong staining for Rb in more than 50% of tumor cells from HCV infected patients and C = BC with negativity for Rb from HCV- infected patients (immunoperoxidase DAB X400).
