The research in our group is focused on elucidating cellular mechanisms that promote or prevent mutations. The cellular factors that increase mutations include generation of reactive chemical species, methylation of DNA, transcription, replication and human AID/APOBEC family of DNA-cytosine deaminases that damage DNA. Cells also express proteins that counteract these potentially hazardous processes by preventing DNA damage or repairing the damage. We aim to understand the interplay between these opposing forces to explain molecular mechanisms that allow cells to diversify and tailor antibodies to counteract infectious agents and respond to viral infections. We are also interested in explaining how these processes may also drive carcinogenesis by causing mutations and using this understanding to find anticancer treatments.