Question

How many genera contain acid-fast organisms? List them.

Answer #1

**Ans:**

**Acid-fast
organisms:**

Acid fast organisms are the organisms that have ability to resist the decolorization by acids during staining procedure. A list of acid fast organisms genera are given below-

**Genera:**

**1. Mycobacterium
spp.**

**2. Nocardia spp.**

**3. Rhodococcus spp.**

**4. Gordonia
spp.**

**5. Tsukamurella
spp.**

**6. Dietzia spp.**

**7. Legionella**

8. **Cryptosporidium
parvum**

**9. Isospora
belli**

**10. Cyclospora
cayetanensis**

**12. Taenia saginata
eggs**

**13. Sarcocystis**

**14. Hydatid cysts of
Echinococcus.**

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