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). The gene discussed is FOXJ1; the disease is infection.