Fig. 4

Microscopic findings of a section taken from the ocular mucosa. a lymphocytic infiltrate can be seen on the surface of the submucosa; b thrombus (*) with edema of the submucosa, degeneration of the fibers and inflammatory cell infiltrate; c perivascular and luminal eosinophils within epithelial blood vessel; d Apicomplexan pseudocyst-like structure (arrow) containing degenerated parasites; e and f PAS and Giemsa stains which show positive protozoa-like structures in the blood vessels lumen (arrows)