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Spores of Encephalitozoon cuniculi in urine (A) and Anncaliia algerae in sputum (B) stained with the modified trichrome (Ryan blue) stain. Note that the spores of A. algerae are significantly larger than spores of Encephalitozoon spp. and may therefore be confused with yeasts. All images are shown at ×1,000 magnification.
