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  • Title: Antigenic characterization of Mycobacterium bovis BCG culture filtrate.
    Author: Gupta VK, Ram GC, Bansal MP.
    Journal: Vet Microbiol; 1994 Aug 15; 41(4):345-53. PubMed ID: 7801534.
    Abstract:
    Mycobacterium bovis BCG culture filtrate, on gelfiltration chromatography revealed four prominent regions. Of these 4, region II possessed the highest antigenic reactivity by enzyme-linked immunosorbent assay (ELISA) and delayed type hypersensitivity (DTH) skin testing in guinea pigs. On anion-exchange chromatography, region II was resolved into 5 prominent fractions of which fraction II was found to have the highest antigenic reactivity. On sodium dodecylsulphate-polyacrylamide gel electrophoresis (SDS-PAGE), M. bovis BCG culture filtrate revealed 11 structural polypeptides. Fraction II yielded a homogenous polypeptide of 15.3 kDa molecular weight. All fractions cross-reacted with various mycobacteria used in this study except a 15.3 kDa polypeptide which was specific to M. bovis BCG.
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