GROSS ANATOMY

Detailed explanation-1: -Tuberculosis (TB) is caused by a bacterium called Mycobacterium tuberculosis. The bacteria usually attack the lungs, but TB bacteria can attack any part of the body such as the kidney, spine, and brain.

Detailed explanation-2: -M. tuberculosis is a small, rod-shaped, strictly aerobic, acid-fast bacillus a. Acid-fast bacilli are bacilli, which once stained, resist discoloration by acid and alcohol. . Like other mycobacteria, it is slow growing, resulting in more gradual development of disease when compared with other bacterial infections.

Detailed explanation-3: -Mycobacteria are Gram-positive, catalase positive, non-motile, non-spore forming rod-shaped bacteria (0.2–0.6 m wide and 1.0–10 m long). The colony morphology of mycobacteria varies with some species growing as rough or smooth colonies.

Detailed explanation-4: -Under the microscope, the bacillus is seen as a bright red rod, while the surface that it grows on is colored blue. All bacteria that react in this way to a Ziehl-Neelsen stain are called acid-fast bacteria. The staining technique is used for the diagnosis of TB infection.