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A moderately differentiated hepatocellular carcinoma (A, H&E) with diffuse reactivity for Arginase-1 and focal reactivity for Hep Par 1 (B, immunohistochemistry Arginase-1 and C, immunohistochemistry Hep Par 1). The in situ hybridization stain for albumin is diffusely and strongly positive (D, in situ hybridization albumin).
