COVID-19 Letter to the Editor Volume 12, Issue 21 pp 20938—20945
Comparative analysis of SARS-CoV-2 and its receptor ACE2 with evolutionarily related coronaviruses
Figure 2. The evolutionary tree of SARS-CoV-2 and representative common coronavirus strains that infect humans. Those coronaviruses could be grouped into 3 clades, with 12 of the coronavirus strains being particularly close to the SARS-CoV-2 in evolution.