Oral immunization of mice and swine with an attenuated Salmonella choleraesuis [delta cya-12 delta(crp-cdt)19] mutant containing a recombinant plasmid.

Abstract excerpt

Salmonella choleraesuis chi 3781, an attenuated [delta cya-12 delta(crp-cdt)19] mutant, was electroporated with the plasmid pBA31-R7, which codes for the expression of a 31-kDa protein from Brucella abortus (BCSP31). Recombinant S. choleraesuis chi 3781 stably maintained the pBA31-R7 plasmid and continued to express the cloned protein following recovery of the organism from orally inoculated animals. Unlike...

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