Fig. 5A: Cysts of Pneumocystis jiroveci in Smear from Bronchoalveolar Lavage

Cysts of Pneumocystis jiroveci in lung tissue, Gomori methenamine silver stain method. The walls of the cysts are stained black and often appear crescent shaped or like crushed ping-pong balls. The intracystic bodies are not visible with this stain.

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Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: September, 2017