Mycobacterium tuberculosis (M. tb) is a types of pathogenic microorganisms in the family Mycobacteriaceae and the causative operator of tuberculosis. First found in 1882 by Robert Koch, M. tuberculosis has a surprising, waxy covering on its phone surface principally because of the nearness of mycolic corrosive. This covering makes the phones impenetrable to Gram recoloring, and therefore, M. tuberculosis can show up either Gram-negative or Gram-positive. Acid-quick stains, for example, Ziehl-Neelsen, or fluorescent stains, for example, auramine are utilized rather to recognize M. tuberculosis with a magnifying lens. The physiology of M. tuberculosis is profoundly vigorous and requires significant levels of oxygen. Basically a pathogen of the mammalian respiratory framework, it contaminates the lungs.