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CD147 expression in cancer nests at the invasive tumor front. Immunohistochemical analysis of (A) CD147-positive, index=4 (positive area, 2; intensity, 2), (B) CD147-negative, index=2 (positive area, 2; intensity, 1) and (C) CD147-negative, index=0 (positive area, 0; intensity, 0) specimens. Magnification, ×200; scale bar, 100 µm. CD147, cluster of differentiation 147.
