Rhinosporidium seeberi: A Human Pathogen from a Novel Group of Aquatic Protistan Parasites
David N. Fredricks,*† Jennifer A. Jolley,* Paul W. Lepp,* Jon C. Kosek,† and David A.
Relman*† *Stanford University, Stanford, California, USA; and †Veterans Affairs, Palo Alto Health Care System, Palo Alto, California, USA
Figure 1. Histology of rhinosporidiosis. A formaldehyde-fixed section of human nasal polyp was stained with Periodic
acid-Schiff (PAS) and visualized
by bright-field microscopy at 400X magnification. The thick walls of immature R. seeberi trophocytesstain with PAS (pink), and the spherical organisms
are surrounded by inflammatory cells.
