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Identification of T-cell epitopes within the fibronectin-binding repeats of the SfbI protein. Peptide-specific proliferative responses from immunized mice were evaluated using total spleen cells (A to C) and after depletion of either CD4+ T cells (D) or B cells (E). Results are expressed as mean counts per minute of triplicate samples. Standard errors of the means are indicated by vertical lines.
