Figure 2From: Up-regulation of platelet-derived growth factor-A is responsible for the failure of re-initiated interferon alpha treatment in hepatocellular carcinoma Effects of IFN-α on (A) tumor weight, (B) serum VEGF level, (C) angiogenesis, and (D) apoptotic index. Representative photo-micrographs of immunohistochemical and TUNEL analysis of MVD and apoptotic cells performed as described in Materials and methods, scale bar = 20 μm.Back to article page