https://pubmed.ncbi.nlm.nih.gov/33051876/
Here, we show that SARS-CoV-2-infected cells express the Spike protein (S) at their surface and fuse with ACE2-positive neighboring cells. Expression of S without any other viral proteins triggers syncytia formation.
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Hmmm, what happens with an mRNA jab which tells cells to start expressing spike proteins? Luck of the draw as to which cells take in the lipid coating or adenovirus?
Great questions.
(IBTFRocters)