Recombinant Human CD8a protein featuring a His tag, utilized in immunological research to investigate T cell co-receptor function, activation, and interactions. The His tag enables straightforward purification via affinity chromatography (e.g., Ni-NTA) and detection in assays. Supports protein-protein interaction studies, including CD8a association with MHC class I molecules. Widely applied in ELISA, Western blotting, flow cytometry, and pull-down assays. Contributes to the development and characterization of immunotherapies and vaccines through analysis of cytotoxic T cell responses.