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mycobacterium tuberculosis definition

mycobacterium tuberculosis definition Synonyms
Pathogens that cause tuberculosis; Typical mycobacteria,
tubercle bacilli
mycobacterium tuberculosis Definition
Mycobacterium tuberculosis, the germ that causes tuberculosis,
is a rod bacterium. Due to the structure of its cell wall, it has to be classified as gram-positive although it only shows a poor uptake of stain. The ability of mycobacteria to resist decoloration by ethanol
and acids is called “acid-fastness”. In Ziel–Neelsen staining tubercle bacilli appear as red rods on a blue background. The pathogens can remain dormant in macrophages (human cells of defense) for years or even
decades without causing any symptoms.

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