This finding was further strengthened by cytotoxicity assays: the B2R-antagonist had no toxic effects on NHBEs even at high doses determined by lactate dehydrogenase (LDH) release, but rather exhibited a cell-protecting effect in uninfected cells (Fig. 1E) and during SARS-CoV-2-infection (Fig. 1F). The gene discussed is BDKRB2; the disease is infection.