Mar 12, 2021
From the study abstract: "The recombinant protein that contains only the ACE2 receptor-binding domain of the SARS-CoV-2 spike protein S1 subunit (Arg319 – Phe541), on the other hand, did not cause this activation." Am I right that it is in fact this is the protein that the vaccines cause cells to manufacture? If so, that would tend to reinforce the safety of them.