1. Francke, U. & Pelligrino, M. A. Proc. natn. Acad. Sci. U.S.A. 74, 1147–1151 (1977).
2. Dorf, M. E. (ed.) The Role of the Major Histocompatibility Complex in Immunobiology (Wiley, New York, 1981).
3. Barnstable, C. J., Jones, E. A. & Bodmer, W. F. Int. Rev. Biochem. 22, 151–226 (1979).
4. Aweh, Z. L., Raum, D., Yunis, E. J. & Alper, C. A. Proc. natn. Acad. Sci. U.S.A. 80, 259–263 (1983).
5. Porter, R. R. Molec. Biol. Med. 1, 161–168 (1983).