Lung: nocardiosis with HIV

Nocardiosis, a bacterial infection This image is a high power view of Nocardia sp. bacteria in an HIV-positive patient with pulmonary nocardiosis. The silver stain shows black, branching, filamentous bacteria with the typical morphology of Nocardia sp. Grocott silver stain. See also W0047303 and W0047305 for further microscopic views from the same patient.