T Cells Melt Tumors (IMAGE) Fred Hutchinson Cancer Center Caption The tiny white cloud at the tip of this test tube is made up of 20 million cancer-fighting T cells -- enough, Fred Hutch researchers are finding, to melt away some tumors. Credit Bo Jungmayer/Fred Hutch file 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.