FIGURE 2.
Production of IFN-γ in response to B. parapertussis. C57BL/6 and TCRβδ−/− mice were inoculated with B. parapertussis and sacrificed 0, 7, 14, or 28 d later. Splenocytes were exposed to media or HK B. parapertussis and monitored for the production of IFN-γ. IFN-γ levels are expressed as the mean pictograms per milliliter produced by each group of mice ± SD. *p < 0.05 when compared with media-stimulated controls.