CD40 and infection: RAdCD40L infection induced a modest reduction in viability of the CD40-positive EJ and AGS but, as expected, had no effect on the CD40-negative HONE-1 cells (RAdMock vs. RAdCD40L: AGS, p = 0.0011; EJ, p = 0.0034; HONE-1, p = 04818) (Figure 1C).