ACE2 and lung cancer: Several groups have attempted to study the global phosphorylation changes in SARS-CoV-2-infected cell lines using highly sensitive chimpanzee Vero E6, human colon cancer CaCo2, human lung cancer A549-ACE2, and induced pluripotent stem cell-derived AT2s (iAT2s) (Supplementary Figures 1A–C) (1–5).