CD8 alpha is an important immune glycoprotein that serves as a coreceptor for MHC class I:peptide complexes, linking T cells to antigens presented by APCs. It interacts with TCR and MHC class I, recruits LCK kinase, and initiates multiple signaling pathways. CD8 alpha Protein, Cynomolgus (HEK293, Fc) is the recombinant cynomolgus-derived CD8 alpha protein, expressed by HEK293 , with C-hFc labeled tag.