Illuminating cell surface receptors (IMAGE) Science For Life Laboratory Caption Site-specific incorporation of two noncanonical amino acids for two-color bioorthogonal labeling and crosslinking of proteins on live mammalian cells Credit Simon Elsässer 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.