Parasitology

Cryptosporidium Oocysts with Acid-Fast Staining

Morphology and staining artifacts of Cryptosporidium sp. oocysts using the acid-fast method: differentiation from yeast cells in a smear.

Smear: unstained Cryptosporidium sp. oocysts and yeast cells
Smear: unstained Cryptosporidium sp. oocysts and yeast cells

🔬 Cryptosporidium sp. oocysts (red arrows) that did not take up the modified acid-fast stain. The smear was counterstained with methylene blue. Note that yeast cells stained red (yellow arrows).

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