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mycobacterium my·co·bac·te·ri·um (mī'kō-bāk-tēr'ē-əm)
Any of various slender rod-shaped aerobic bacteria of the genus Mycobacterium, which includes the bacteria that cause tuberculosis and leprosy.
A genus of aerobic, nonmotile bacteria containing gram-positive rods and including both parasitic and saprophytic species.