Yes, in long muscle fibers and in the syncytiotrophoblast of the placenta. This involves repurposed viral DNA. Viruses use that DNA to spread directly from cell

Yes, in long muscle fibers and in the syncytiotrophoblast of the placenta. This involves repurposed viral DNA. Viruses use that DNA to spread directly from cell to cell. The placenta makes a giant multi-nucleated cell to block any gaps.