Mouse BMDC were treated with LPS (L) for 18 hours followed by pulsing with 10−10M gp33-41, infection with VV-gp33-41, or exposure to UV VV-gp33-41 for 12 hours. Virus treatments were performed with MOIs of 0.1, 1, and 10. Treated BMDC were co-cultured for 3 days with CFSE-labeled splenocytes from naïve gp33-41-specific P14 TCR transgenic mice. A, Percent of gp33-41-specific CD8+ T cells that entered division. B, Percent of P14 T cells that produced IFNγ+ following restimulation at the end of the three day co-culture period. Values are the average of 3 experiments.