Summary: Creative Peptides offers HLA-A_02_01 Adenovirus 11 Hexon913-921 tetramer-YLLFEVFDV-PE labeled which can be used for direct detection of antigen specific T cells. https://www.creative-peptides.com/product/hla-a-adenovirus-hexon913-tetramer-yllfevfdv-pe-labeled-item-cpm-1-0229-34069.html