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  • Title: Enzymatic and antigenic analyses of strains of Mycobacterium bovis, M. bovis BCG, and M. tuberculosis.
    Author: Ohman R, Ridell M.
    Journal: Curr Microbiol; 1995 Mar; 30(3):161-5. PubMed ID: 7765849.
    Abstract:
    Strains of Mycobacterium bovis, M. bovis BCG, and M. tuberculosis, including a so-called Canetti strain, were analyzed by means of two-dimensional immunoelectrophoresis (2D-IE), 2D-IE combined with enzyme staining, and multilocus enzyme electrophoresis (MEE). The results demonstrated a close antigenic and enzymatic resemblance among all the strains tested, even though the BCG strains could be divided into two groups based on the presence of one precipitinogen. Eight of the precipitinogens were shown to correspond to enzymes in M. bovis BCG and 10 in M. tuberculosis. Thus, catalase, isocitrate dehydrogenase, malate dehydrogenase, peroxidase, and several others were identified. By means of MEE the strains of M. tuberculosis, M. bovis, and M. bovis BCG could be differentiated. The analyses further indicated that the M. tuberculosis strain Canetti was more closely related to M. bovis than to M. tuberculosis.
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