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Immunohistochemical analysis of NAMPT expression in normal and cancerous breast tissues. (A) Strong immunostaining of NAMPT protein in breast cancer tissue. Arrow indicates NAMPT positive expression. (B) Strong and moderate immunostaining of NAMPT protein in breast cancer tissue. Arrow indicates NAMPT positive expression. (C) Negative immunostaining of NAMPT in normal breast tissue. Magnification, ×400. NAMPT, nicotinamide phosphoribosyltransferase.
