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. 1987 Dec;55(12):3213-4.
doi: 10.1128/iai.55.12.3213-3214.1987.

Characterization of the secreted antigens of Mycobacterium bovis BCG: comparison of the 46-kilodalton dimeric protein with proteins MPB64 and MPB70

C Abou-Zeid  1 , M Harboe, G A Rook
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Characterization of the secreted antigens of Mycobacterium bovis BCG: comparison of the 46-kilodalton dimeric protein with proteins MPB64 and MPB70

C Abou-Zeid et al. Infect Immun. 1987 Dec.

Abstract

Western blot analysis showed that the 46-kilodalton (kDa) dimeric protein antigen secreted in large amounts by some daughter strains of Mycobacterium bovis BCG corresponded to protein MPB70 present in long-term culture filtrates of the Japanese substrain. The 46/23-kDa antigen is the most abundant protein in supernatant from a 5-day culture but is masked by leaked products in old culture supernatants. No similarities were found between the 46-kDa protein and MPB64, a protein with the same strain distribution, or with the antigen of similar molecular mass recognized by monoclonal antibody SA1.D2D.

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