RIGI and viral infectious disease: As shown in Figure 1B, upon Sendai virus (SeV) stimulation in I‐5 cells, we detected transcription of antiviral genes, such as IFNB, CXCL10, and ISG54, which is comparable to those in wild‐type HEK293T cells, suggesting that I‐5 cells respond normally to virus infection by activation of RIG‐I pathway.