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Immunohistochemical analysis of (a,b) cyclin E and (c,d) manganese superoxide dismutase (MnSOD) in primary breast cancers. Shown are examples of (a) low and (b) high cyclin E‐expressing tumors, and (c) weak and (d) strong staining for MnSOD. Original magnification, (a, b) ×120 and (c,d) ×200.
