Defective control of LCMV infection in Stx11^−/−, Rab27a^−/−, and Prf1^−/− mice.Stx11^−/− (open squares), Rab27a^−/− (gray triangles), Prf1^−/− (gray circles), and control B6 (black squares) mice were infected with 200 pfu of LCMV-WE. After 8 or 12 days after infection, LCMV titers in the spleen were determined. Data (mean ± SEM) are representative of 3 independent experiments with at least 3 mice in each group. *P < .05. ***P < .001.