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Unformatted text preview: Electron Microscope SEM Causative agent: Mycobacterium tuberculosis Category: bacteria: Kingdom : Bacteria. Phylum : Actinobacteria. Order : Actinomycetales Suborder: Corynebacterineae Family : Mycobacteriaceae. Genus : Mycobacterium. Species : tuberculosis Disease: Tuberculosis, TB, White Death, Consumption; M. Bovis caused the disease in animals first. After the domestication of animals (8,000-4,000 B.C.), TB was probably passes to humans via the consumption of cow's milk. The disease developed in Indo-Europeans who probably spread it through migrating to W. Europe and Eurasia. By 1,000 B.C., the disease had been carried throughout the entire known world. Commonly acquired by inhaling the bacillus.Immunocompromised hosts are more susceptible to T.B. and are harder to cure using the most common methods. E.g. persons with AIDS may never recover fully from T.B. Morphology & Gram RX: weakly gram +, non-motile, pleomorphic slender rod and an obligate aerobe. The rods grow slowly (20 hour or longer generation time), sometimes form filaments and tend to grow in clumps. They are hydrophobic with a high lipid content. hour or longer generation time), sometimes form filaments and tend to grow in clumps....
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