Mycobacterium avium complex

noun
Mycobacterium avi·​um complex | \ -ˈā-vē-əm-, -ˈä- How to pronounce Mycobacterium avium complex (audio) \

Medical Definition of Mycobacterium avium complex

: two bacteria of the genus Mycobacterium (M. avium and M. intracellulare) that account for most mycobacterial infections in humans other than tuberculosis, that usually affect the lungs but may involve the lymph nodes, bones, joints, and skin, and that may cause disseminated disease in immunosuppressed conditions (as AIDS) abbreviation MAC

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