HLA Specificity tree (IMAGE) Technical University of Denmark Caption Combined specificity tree for HLA-DR, HLA-DP, and HLA-DQ. Orange molecules have peptide coverage corresponding to at least 50 high-confidence ligands, and blue molecules have a pseudo-sequence distance of at most 0.05 to an orange molecule. Logos in red frames correspond to noncovered molecules. Credit: Jonas Birkelund Nilsson. Credit Illustration: Jonas Birkelund Nilsson <jonnil@dtu.dk> Usage Restrictions None but with due credit. 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.