Method 1623
Giardia & Cryptosporidium
Knowledge Review: Cryptosporidium
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Is it Cryptosporidium? If all three photos represented the same organism, support why you think the organism is or is not Cryptosporidium by checking the characteristics observed in the photos. Once you have decided, check the Yes or No box below. (Assume the microscope is adjusted for maximum contrast and resolution.)
1. One sporozoite
2. Amorphous internal structure
3. Atypical internal morphology on DIC
4. Atypical shape
5. Correct shape
6. Atypical cell wall on DIC
7. Typical cell wall on DIC
8. Atypical fluorescent pattern
9. Brilliant apple-green fluorescence
10. Four or fewer DAPI stained nuclei
11. More than four DAPI stained nuclei
12. Atypical DAPI staining
Organism for Knowledge Review




Yes, it is Cryptosporidium.
No, it is not Cryptosporidium.

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