PDIA4 and infection: By detecting the viral titers of LCMV-MACV and LCMV-LASV in the supernatants of LCMV-MACV- or LCMV-LASV-infected PDIA4-KO A549 cells at 24 h.p.i., we verified that the genetic ablation of PDIA4 would affect the infection of LCMV-MACV and LCMV-LASV (Figure 5).