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    Shigella sonnei Plasmids: Evidence that a Large Plasmid is Necessary for Virulence

    P. J. Sansonetti / D. J. Kopecko / S. B. Formal | NTIS | 1981
    Schlagwörter: Morphology(Biology)

    Involvement of a Plasmid in the Invasive Ability of Shigella flexneri

    P. J. Sansonetti / D. J. Kopecko / S. B. Formal | NTIS | 1981
    Schlagwörter: Strains(Biology)

    Genetic Regulation of Variable Vi Antigen Expression in a Strain of Citrobacter freundii

    N. J. Snellings / E. M. Johnson / D. J. Kopecko et al. | NTIS | 1980
    Schlagwörter: Strains(Biology)