MLKL and infection: To investigate which types of cell death are suppressed in prion-infected cells after IAV/WSN infection, we performed Western blotting for various cell death markers, including the apoptosis marker cleaved caspase-3, the autophagic cell death marker light chain 3-II (LC3-II), and the necroptotic marker phosphorylated mixed-lineage kinase domain-like pseudokinase (MLKL), in N2aC24 and N2aC24L1-3 cells after IAV/WSN infection.