M. avium intracellulare is: September 2009
Correct Answer: Non photochromogens
Description: Ans. A: Non photochromogens Runyon Groups * Pigmentation studies - Scotochromogens: Pigmentation in the dark (and light) - Photochromogens: Pigmentation only after exposure to light - Non-photochromogens: No pigment forms Group I: photochromogens - Mycobacterium kansasii - Mycobacterium marinum Group II: scotochromogens - Mycobacterium scrofulaceium - Mycobacterium gordonae Group III: non-photochromogens - Mycobacterium avium complex Group IV: Rapid growers - Mycobacterium fouitum - Mycobacterium chelonei
Category:
Microbiology
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