Figure 5From: Abnormal expression and processing of the proprotein convertases PC1 and PC2 in human colorectal liver metastases Immunohistochemistry for PC2 in normal and unaffected liver compared to colorectal (CRC) liver metastases. A. Light microscopy PC2 immunohistochemistry of normal liver (N), using 400 × magnification. Arrowheads indicate positively stained hepatic cells. B. Light microscopy PC2 immunohistochemistry of liver metastasis (T) and adjacent unaffected parenchyma (U), using 25 × magnification. Arrowheads indicate positively stained cells mainly in the unaffected liver. C. Light microscopy PC2 immunohistochemistry of liver metastasis (T) using 200 × magnification. Arrowheads indicate positively stained tumor cells.Back to article page