nhmemorymaker
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She means that mRNA is degraded (instructions on how to make the protein are mRNA in this case). mRNA will be eventually degraded once it enters the body. Before it degraded, its used to make spike protein (mRNA is translated into the spike protein). Spike protein is what helps the immune system to prepare for covid infection.
mRNA is not very stable (which is why Pfizer has to be frozen at ultra cold temperatures even before injection). So its not going to last long in the body. The goal of the mRNA is to make spike protein. It's the goal of all current vaccines.
If mRNA is unstable, why does Moderna not have to be frozen?