FIGURE 6

(A) In a microglial nodule, two cells contain intensely blue-stained spores within single clear vacuole that is more detailed at higher magnification in the inset. (B) Ultrastructural study of the same area shows the presence of two spores and proliferative forms of microsporidia within a nonseptated vacuole in a glial cell. (A, toluidine blue; original magnification, 200×. Inset, original magnification, 400×. B, lead citrate, uranile acetate; original magnification, 3000×.)