MHC Tetramers from Tetramer Shop provide unparalleled antigen flexibility, broadest choice of color and brighter staining of antigen-specific T cells. Our Tetramers are available as peptide-receptive Empty Loadable MHC Tetramers. These "DIY" Tetramers are "Tetramers on demand" and provide our customers with unprecedented flexibility as peptide antigen can be applied just prior to staining T cells. No UV-cleavage, no bleaching, no heating, no chaotropic salts, no exchange - just add peptide antigen and stain. This is a dramatic increase in flexibility of Tetramer assays and can significantly save on your Tetramer expenses. Empty Loadable Tetramers are particular advantageous when you are staining - for multiple T cell specificities - for T cell reactivity against neoantigens - for T cell specificities against proprietary peptide antigens that you do not wish to disclose.