1. Anfinsen, C. B., P. Cuatrecasas, and H. Taniuchi (1971), inThe Enzymes P.D. Boyer, ed., Academic Press, New York, p. 177.
2. Arquilla, E. R., and J. Finn (1963),Science 142, 400.
3. Arquilla, E. R., and J. Finn (1965),J. Exptl. Med. 122, 771.
4. Benacerraf, B., and D. H. Katz (1975),Adv. Cancer Res. 21, 121.
5. Benacerraf, B., and H. O. McDevitt (1972),Science 175, 273.