The initial step after the invasion of severe acute respiratory syndrome SARS-CoV-2 is binding to membranal ACE2 receptor, widely expressed in various organs… https://www.semanticscholar.org/paper/Covid-19-infection-and-mortality%3A-a-physiologist’s-Abassi-Skorecki/6f28899362fe669a5c20037c13ba65d20f313c70