ART4 and lung adenocarcinoma: Since SARS-CoV-2 favorably infects the lung and kidney (19, 20), we tested the human embryonic kidney HEK293T cells and human lung adenocarcinoma H1650 and A549 cells by infecting them with mock (“nude” Vpp, as a negative control), SARS-CoV-2 Spike Vpp and VSV-G Vpp (virus particles pseudotyped with the glycoprotein of vesicular stomatitis virus, as a positive control).