Vanishing bile duct syndrome in human immunodeficiency virus: Nevirapine hepatotoxicity revisited

Figure 3 Liver biopsy specimen with cytokeratin staining for biliary elements. A: No bile ducts are seen, minimal ductular proliferation is apparent at the edges of the portal tract (long arrows); B: Solitary portal tract with presence of irregular bile ducts (long arrows) and ductular proliferation (short arrows).