OKT8 human phenotype expressed by Papio papio monkey lymphocytes.

The potential cross-reactivity between human and Papio papio monkey lymphocyte antigens was investigated using various monoclonal antibodies specific for human T cell subsets and HLA-DR antigens. Monkey circulating lymphocytes expressed the OKT8 antigen, specific for the suppressor/cytotoxic T cell population and the HTLA antigens. These reactivities were also detected on lymphoid cells in the thymus and lymph nodes of the Papio monkey.