HPV (IMAGE) Rockefeller University Caption Keratinocyte skin cells are common targets of the beta subtype of human papilloma virus. This usually harmless infection causes skin disease in people with rare gene mutations. Credit The Rockefeller University Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.