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Schematic diagram of the TR-FRET assay used to measure stable neoepitopeHLA binding. In brief, HLA monomers bound to UV-cleavable peptides are exposed to UV light in the presence of mutation-bearing candidate neoepitopes. Successful exchange of the candidate peptide will lead to complex stabilization and TR-FRET emission (top). Unsuccessful exchange will lead to aggregation and no TR-FRET emission (bottom).

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