T Cell Immunity (IMAGE) Massachusetts General Hospital Caption Robust T cell immunity against an early cancer clone arising in the skin that has been colonized with a commensal virus. CD45+ leukocytes (grey) and CD3+ T cells (yellow) attacking cancer cells infected with commensal papillomavirus (red). Credit Jon Messerschmidt. Usage Restrictions None 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.