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Mycobacterium tuberculosis (M. tb), also known as Koch's bacillus, is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis. [ 1 ] [ 2 ] First discovered in 1882 by Robert Koch , M. tuberculosis has an unusual, waxy coating on its cell surface primarily due to the presence of mycolic acid .
Mycobacterium is a genus of over 190 species in the phylum Actinomycetota, assigned its own family, Mycobacteriaceae.This genus includes pathogens known to cause serious diseases in mammals, including tuberculosis (M. tuberculosis) and leprosy in humans.
Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, [7] is a contagious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. [1] Tuberculosis generally affects the lungs , but it can also affect other parts of the body. [ 1 ]
The Mycobacterium tuberculosis complex (MTC or MTBC) is a genetically related group of Mycobacterium species that can cause tuberculosis in humans or other animals. It includes: Mycobacterium tuberculosis; Mycobacterium africanum; Mycobacterium orygis [1] Mycobacterium bovis and the Bacillus Calmette–Guérin strain; Mycobacterium microti ...
Most attention have been traditionally devoted to the mycolic acids of Mycobacterium species, which display great variation in length and modifications. Modifications not seen in M. tuberculosis include: [9] Double bonds (cis and trans), in M. smegmatis (with a branch from UmaA1) and M. alvei; ω-1 methoxy, in M. alvei; trans-epoxy group, in M ...
All Mycobacteria – M. tuberculosis, M. leprae, M. smegmatis and atypical mycobacteria. Certain Actinobacteria (especially aerobic ones in the order Mycobacteriales) with mycolic acid in their cell wall; not to be confused with Actinomyces, which is a non-acid-fast genus of actinomycete. Note that Streptomyces do not contain mycolic acid.
Mycobacterium bovis causes tuberculosis in cattle. Since tuberculosis can be spread to humans, milk is pasteurized to kill any of the bacteria. [5] Mycobacterium tuberculosis that causes tuberculosis (TB) in humans is an airborne bacterium that typically infects the human lungs. [6] [7] Testing for TB includes blood testing, skin tests, and ...
Mycobacterium tuberculosis strain H37Rv is the most studied strain of tuberculosis in research laboratories. [1] It was first isolated by Dr. Edward R. Baldwin in 1905. [2] The strain came from a 19 year old patient with chronic pulmonary tuberculosis at the Trudeau Sanatorium in Saranac Lake, New York. [3]