Therefore, we monitored the infection efficiency of SARS-CoV-2 in FOXJ1+ ciliated cells and found significantly less SARS-N+; FOXJ1+ ciliated cells in NDUFA4−/− iPSC-derived airway organoids than in WT iPSC-derived airway organoids (Figures 5I and 5J). Here, COXFA4 is linked to infection.