AGO1 and infection: Although susceptibility to infection was equivalent, there were differences in their level of Drs transcript: for Yolk > Ago-1 flies this did not detectably change over the course of infection—mirroring that observed with a Toll pathway mutant—but it increased within Yolk > Exp5RNAi flies comparably to that observed with the Yolk > RFP control (Figure 1C).