Figure 6From: Chronic hepatitis B virus infection and occurrence of hepatocellular carcinoma in tree shrews (Tupaia belangeri chinensis) Ki67 immunohistochemistry. The density of Ki67-positive cells inside the live tumor (A) was much higher than that in the tumor-surrounding tissue (B), the liver biopsies collected before occurrence of liver tumor (C) and the liver biopsies collected from animals in group B (D). Immunohistochemical staining for Ki67, 100×.Back to article page