Leprosy is cause by infection with an intercellular pathogen known as Mycobacterium leprae. M. leprae is a strongly acid-fast, rod-shaped bacterium. leprae has the longest doubling time of all known bacteria (13 days) which makes doing laboratory research (in vitro) on this organism quite difficult.Click to see full answer. Similarly, is Mycobacterium tuberculosis acid fast?Mycobacterium tuberculosis is an airborne bacterium that typically infects the human lungs. These Acid-fast organisms like Mycobacterium contain large amounts of lipid substances within their cell walls called mycolic acids. These acids resist staining by ordinary methods such as a Gram stain.Subsequently, question is, where is Mycobacterium leprae most likely to be found? Mycobacterium leprae is the aetiologic agent of leprosy affecting the skin and peripheral nerves. The infection is currently found in over 100 countries often located in high-burden areas against a low-burden background of cases. Clinical manifestations are varied and reflect the host’s immune response to the bacteria. Regarding this, what color is Mycobacterium leprae? The symptoms of M. leprae, also known as leprosy, are unattractive skin sores that are pale in color, lumps or bumps that do not go away after several weeks or months, nerve damage which can lead to complications with the ability to sense feeling in the arms and legs as well as muscle weakness.How do I identify Mycobacterium leprae?leprae. The aetiological agent of leprosy is Mycobacterium leprae. It is a strongly acid-fast rod-shaped organism with parallel sides and rounded ends. In size and shape it closely resembles the tubercle bacillus.