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Evaluation of the effect of RpoS in the synthesis of Vi polysaccharide in S. Typhi by rocket immune electrophoresis. S. Typhi Ty2 RpoS−; S. Typhi ISP1820 RpoS+; S. Typhi Ty2 RpoS+ dervivative; S. Typhi Ty2 rpoSΩAp (RpoS−) derivative; S. Typhi ISP1820 rpoSΩAp (RpoS−) derivative; The strains were grown in LB media with 0, 0.15, 0.3 and 0.4 M NaCl. Reproduced with permission from Santander et al. [51].
