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A. Representative images of KPNA2 immunohistochemical staining from normal and malignant tongue tissues. B. KPNA2 staining intensity in primary tumor and adjacent normal tissue *p<0.0001. C. Frequency of KPNA2 positive cells in primary tumor and adjacent normal tissue (2%). *p<0.0001. D. Correlation between KPNA2 expression and tumor grade. *p<0.05.
