The study (Datta et al., 2020) found that ACE2 was expressed at high levels in the epithelial cells of the lung after the death of COVID-19 patients and that targeting the ACE2/Ang 1-7 axis and blocking the S-protein interaction of ACE2 with SARS-CoV-2 to prevent the entry of SARS-CoV-2 into the cells could be used to treat and prevent COVID-19. Here, ACE2 is linked to COVID-19.