https://t.co/EEft7ZpJ9H This just an abstract but it explains the ideas behind the mRNA vaccine. Maybe this is not the exact biotech that Pfizer, Moderna, and Johnson and Johnson used, but it is likely similar.
@RetsefL 9/ The reason for this is simple: The mRNA in the vax is very stable because of modified nucleosides. They not only increase expression levels, but also make the vax mRNA much harder to degrade via RNases - the mechanism for RNA recycling. https