Now basically what the DNA virus does is it infects that cell by essentially injecting our nucleic acid the single or double stranded DNA molecule inside that cell. And that DNA basically ends up in the nucleus of our cell. Now once in the nucleus of that cell, it can basically use the infected host cells machinery. It can use the infected host cells polymerase enzymes to basically transcribe as well as replicate the DNA molecules. So transcription of DNA into RNA and then into mRNA can take place. And then that viral mRNA can be used to produce our proteins by using the cell's ribosomes in the cytoplasm of that cell.