1. Blue, M.-L., Daley, J. F., Levine, H. and Schlossman, S. F. 1985. Coexpression of T4 and T8 on peripheral blood T cells demonstrated by two-color fluorescence flow cytometry. J. Immunol.134:2281.
2. Van de Griend, R. J., de Bruin, H. G., Rümke, H. C., van Doorn, R., Roos, D. and Astaldi, A. 1982. Isolation and paritial characterization of a novel subset of human T lymphocytes defined by monoclonal antibodies. Immunology47:339.
3. Lanier, L. L., Ruitenberg, J. J. and Philips, J. H. 1986. Human CD3+ T lymphocytes that express neither CD4 nor CD8 antigens. J. Exp. Med.164:339.
4. Kay, N. E., Bone, N., Hupke, M. and Dalmasso, A. P. 1990. Expansion of a lymphocytes population co-expressing T4 (CD4) and T8 (CD8) antigens in the peripheral blood of a normal adult male. Blood75:2024.
5. Sala, P., Tonutti, E. Feruglio, C. Florian, F. and Colombatti, A. 1993. Persistent expansions of CD4+CD8+ peripheral blood T cells. Blood83:1546.