Sarcocystis stages in tissues of intermediate hosts (A to F) and definitive hosts (G to I). Sarcocystis stages in tissues of intermediate hosts (A to F)

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Presentation transcript:

Sarcocystis stages in tissues of intermediate hosts (A to F) and definitive hosts (G to I). Sarcocystis stages in tissues of intermediate hosts (A to F) and definitive hosts (G to I). Panels A to G show hematoxylin-stained images. All images are of S. cruzi, except panel E, which is an image of S. hominis. (A) Artery with a first-generation multinucleate schizont (arrow) in an endothelial cell. (B) Kidney glomerulus with immature (arrowhead) and mature (arrow) second-generation schizonts. (C) Blood smear with a merozoite in a mononuclear cell. (D) Heart with an immature sarcocyst containing globular metrocytes. (E) Skeletal muscle with a cross section of a mature sarcocyst with a thick striated wall surrounded by a mononuclear cell infiltrate. (F) Skeletal muscle with longitudinal and cross sections of sarcocysts. The was no inflammatory response. (G) Lamina propria of small intestine with a macrogametocyte (arrow). (H) Small intestine with sporulated sporocysts (arrow) (Whipf's polychrome stain). (I) Phase-contrast microscopy of two sporocysts in a fecal float. Ronald Fayer et al. Clin. Microbiol. Rev. 2015; doi:10.1128/CMR.00113-14