Fig. (1) Histopathology and immunohistochemistry associated with NiV infection in ferrets. A: Severe necrotizing alveolitis and vasculitis with positive staining for NiV nucleoprotein antigen in blood vessel wall (long arrows) and syncytial cells (short arrows). B: Acute glomerular degeneration with associated NiV nucleoprotein antigen in ferret kidney. A syncytial cell (arrow) is visible along the inner membrane of Bowman's capsule. Immunohistochemistry, haematoxylin counterstain. Scale bar for all images = 50 ┬Ám.