Antigen Detection by T-cell Receptors (image) Howard Hughes Medical Institute Share Print E-Mail Caption Proteins on immune cells called T-cell receptors (red) detect specific protein snippets (yellow) on the surface of other cells, including tumor cells. A new technique lets researchers find snippets linked to cancer. Credit Eric Smith and Christopher Garcia Usage Restrictions Must use with credit Share Print E-Mail 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.