ADAR1 deficiency results in enhanced induction of IκBα following MV infection. CONkd, PKRkd, and ADAR1kd cells were either left uninfected (UI) or infected with WT, Vko, or Cko MV, as indicated. At 24 h postinfection, total RNA was isolated and IκBα mRNA normalized to GAPDH was measured by qPCR.