Abstract Background: BNT162b2 RNA-based COVID-19 injections are specified to transfect human cells to efficiently produce spike proteins for an immune response. Methods: We analyzed four German BNT162b2 lots applying HEK293 cell culture, immunohistochemistry, ELISA, PCR, and mass spectrometry. Results: We demonstrate successful transfection of nucleoside-modified mRNA (modRNA) biologicals into HEK293 cells and show robust levels … Continue reading BioNTech RNA-Based COVID-19 Injections Contain Large Amounts Of Residual DNA Including An SV40 Promoter/Enhancer Sequence