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PKM2 is upregulated in breast cancer tissues. (a) Representative images of IHC staining of PKM2 in normal breast tissues and breast cancer tissue samples (TNBC, luminal, and HER-2 positive; ×200 and ×400 magnification). (b) IHC score of PKM2 in normal tissues (NT) and breast cancer (BRCA) (∗∗P < 0.01).
