Figure. Pathologic signs associated with Nipah virus infection in squirrel monkeys. A) Focal inflammation in the lung (monkey B). Hematoxylin and eosin stains; original magnification ×10. B) Viral antigens (brown staining) were immunolocalized to the alveolar walls (monkey E). C) brain neuron (monkey B). D) Tubular and extratubular cells in the kidney (monkey E). E) Lymphoid cells in the spleen (monkey D). B–E, immunoperoxidase stains, original magnification ×20.