Figure 2. A) Microscopic appearance of liver with tissue necrosis, lymphohistiocytic inflammation, and Sarcocystis schizonts (arrows) in a pigeon 8 days after infection with 105 Sarcocystis sporocysts. Hematoxylin and eosin stain; scale bar = 20 μm. B) Transmission electron micrograph of a hepatocyte from liver in panel A, containing a schizont, forming cross-sectioned and longitudinally sectioned merozoites. N, nucleus; PV, parasitophorous vacuole; M, merozoite. Scale bar = 20 μm.