Majid Kazemian (IMAGE) Purdue University Caption Majid Kazemian and a team of scientists have discovered that the gene TCF-1 plays a key role in controlling TReg cells, affecting the severity of colon cancer. Credit Purdue University photo/Rebecca McElhoe Usage Restrictions None License Original 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.