KRT13 and influenza: Transcripts from four genes were increased in the RNA seq data for placentae from E7.5 maternal influenza infection compared to controls including keratin 13 (Krt13) (p = 0.001; fold change (FC) = 5.4), keratin 15 (Krt15) (p = 0.02; FC = 4.6), Ppbp (p = 0.02; FC = 4.6) and Tmem150A (p = 0.04; FC = 4.4) collected at E18.5 of gestation.