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Bcl-2 expression in ccRCC. A): (Bcl-2 X400). Strong cytoplasmic expression of bcl-2 protein in a grade 1 ccRCC. B): (Bcl-2 X400). Weak cytoplasmic expression of bcl-2 protein in a few malignant cells in a grade 3 ccRCC. Note also the positive inflammatory cells. ccRCC: clear cell renal cell carcinoma.
