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Histopathology of lung shows widened alveolar septa containing a few inflammatory cells and numerous yeasts of the fungal pathogen C. neoformans. The inner layer of the yeast capsule stains red. Cryptococcosis is transmitted through inhalation of airborne yeast cells and/or biospores. At risk are the immunocompromised, especially those with HIV infection. Photo: CDC/Dr. Edwin P. Ewing, Jr.
