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Immunohistochemical staining of USP22 protein in NSCLC tissue samples. Tissue sections were immunohistochemically stained with an anti-USP22 antibody and scored as 0 (A), 1+ (B), 2+ (C) and 3+ (D). Positive USP22 immunostaining was mainly localized in the cytoplasm of tumor cells. Scale bars=50 µm. Original magnifications=400×.
