MAPK11 and infection: Likewise, p38b RNAi, when expressed with a ubiquitous driver (tubulin-GAL4), exhibited significantly reduced survival following IIV-6 infection compared to wild-type (driver alone) controls (Fig 5D, additional trials S6 Fig), while p38aRNAi lines survived similarly to controls (Fig 5E, additional trials, S7 Fig).