Pfizer’s COVID-19 Vaccine Goes Into Liver Cells and Is Converted to DNA: Study

Pfizer’s COVID-19 Vaccine Goes Into Liver Cells and Is Converted to DNA: Study
A nurse prepares the Pfizer COVID-19 vaccine in a file image. Jeff Kowalsky/AFP via Getty Images
Meiling Lee
Updated:

The messenger RNA (mRNA) from Pfizer’s COVID-19 vaccine is able to enter human liver cells and is converted into DNA, according to Swedish researchers at Lund University.

The researchers found that when the mRNA vaccine enters the human liver cells, it triggers the cell’s DNA, which is inside the nucleus, to increase the production of the LINE-1 gene expression to make mRNA.