Fig. 4: Cysts of Pneumocystis jiroveci from the Lungs of a Person with PCP

Cysts of Pneumocystis jiroveci in bronchoalveolar material, Giemsa stain method.The rounded cysts are 4 to 7 µm in diameter and contain 6 to 8 intracystic bodies, whose nuclei are stained by the dye. The walls of the cysts are not stained