Gladstone scientist Alex Marson (IMAGE) Gladstone Institutes Caption A team led by Alex Marson mapped out the networks of genes that help differentiate regulatory T cells, the peacekeepers of the human immune system, from other T cells. Credit Gladstone Institutes 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.