FIG. 4.

FV-specific IFN-γ production by spleen cells from FV-infected H-2^b/b and H-2^bm14/b mice. Seven days after infection with 1,500 SFFU, spleen cells from either H-2^b/b or H-2^bm14/b mice were stimulated in vitro with 5 μg of purified FV per ml. After 72 h, supernatants were harvested and analyzed for IFN-γ using an IFN-γ-specific sandwich ELISA as described for Fig. 1. Data are presented as the averages plus the standard errors of the means for four mice per group.