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Analysis of native and recombinant GroES. Different preparations of M. tuberculosis GroES were analyzed by silver-stained SDS-PAGE (A) and immunoblot analysis with MAb HYB 76-1 (B). Lanes: 1, ST-CF; 2, biochemically purified nGroES; 3, rGroES. Numbers at the left indicate molecular mass markers in kilodaltons.
