No significant difference between the mean numbers of S. aureus colonies between WT and PRIP-DKO MEFs was observed at 1.5 h post-infection, but the ratio of the colony number at 3 h post-infection relative to that at 1.5 h post-infection was significantly higher in PRIP-DKO cells than in WT cells (Figure 3C), suggesting that S. aureus infected into PRIP-DKO MEFs proliferated in the autophagosomes. This evidence concerns the gene PLCL1 and infection.