Your sources lie. RNA is produced in the nucleus by copying DNA, then it leaves the nucleus. Vaccine mRNA enters the cell, were it works like the RNA produced in the nucleus. But mRNA never duplicates or enters the nucleus or touches the DNA. Only viruses can do this (and they are used for a decade to manipulate DNA).
Your sources lie. RNA is produced in the nucleus by copying DNA, then it leaves the nucleus. Vaccine mRNA enters the cell, were it works like the RNA produced in the nucleus. But mRNA never duplicates or enters the nucleus or touches the DNA. Only viruses can do this (and they are used for a decade to manipulate DNA).
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