Recombinant adenylate cyclase toxoids are shown to deliver inserted foreign CD4(+)-T-cell epitopes into the major histocompatibility complex class II presentation pathway, inducing a specific CD4(+)-T-cell response in vivo and yielding in vitro stimulation of specific CD4(+) T cells at a 100-times-higher molar efficiency than the free peptide containing the epitope.

Laboratory of Molecular Biology of Bacterial Pathogens Institute of Microbiology of the Academy of Sciences of the Czech Republic CZ 142 20 Prague 4 Czech Republic

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