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Tumor grade-dependent p53 protein expression. The graph represents the number of cases positive for p53 mutated protein expression using ELISA (black columns), anti-p53 antibodies (hatched columns) and total p53 protein expression in breast tissue by IHC (white columns) in healthy, benign carcinoma in situ (DCIS) patients and in patients with invasive ductal carcinoma (IDC) stages I, II and III.
