Creative Peptides offers H-2Ld HBsAg tetramer-IPQSLDSWWTSL-PE labeled which can be used for direct detection of antigen specific T cells. Visit
https://www.creative-peptides.com/product/h-2ld-hbsag-tetramer-ipqsldswwtsl-pe-labeled-item-cpm-1-0039-33879.html for more information.