The unique characteristics of Mycobacterium tuberculosis are rough, non-pigmented colonies. It exhibits slow growth. The optimum temperature is 37°C.
What is the habitat of Mycobacterium tuberculosis?
- The only known reservoir is humans.
- can exist everywhere in the body but is typically found in the lungs.
- They could be free-living, facultative, opportunistic pathogens, or obligate pathogens.
- It usually spreads the infection to mononuclear phagocytes.
- It can potentially be contaminated if unpasteurized milk is consumed.
- It can last months in sputum and survive for weeks in the dust, on garments, or carpets.
- They can also be discovered in water and soil.
What are the characteristics of Mycobacterium tuberculosis?
- A relatively small, rod-shaped, strictly aerobic, the acid-fast bacillus is M. tuberculosis.
- When compared to other bacterial infections, it develops disease more gradually because it grows slowly, like other mycobacteria.
- Its culture is characterized by unpigmented, rough colony development.
- It produces niacin.
- It also reduces nitrates.
Mycobacterium tuberculosis produces non-pigmented colonies and is rough in appearance. It produces niacin and also reduces nitrate.
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Question: Characteristics necessary for the definitive identification of Mycobacterium tuberculosis are:
- buff color, slow growth at 37°C, niacin production positive, nitrate reduction-negative
- rough colony, slow growth at 37°C, nonpigmented
- rough, nonpigmented colony, cording positive, niacin production-negative, catalase-negative at pH 7/68°C.
- rough, nonpigmented colony, slow growth at 37°C, niacin production-positive, nitrate reduction-positive
