1. Ada, G. L., Benacerraf, B., Eisen, H. N., Miller, J. F. A. P., Mitchinson, N. A., Pernis, B., Seligmann, M., Simonsen, M., Sterzi, J. and Unanue, E.: 11/1d Hlth Org. techn. Rep. Ser. No. 448 (1970).
2. Almeida, J. O.: Bull. Wld 111th Org. 26, 233 (1962).
3. Amos, B. and Koprowski, H.: Conference on Cell Bound Antibodies. Wistar Inst. Press, Philadelphia 1963.
4. Arnason, B. G. and Waksman, B. H.: Advanc. Tuberc. Res. 13, 1 (1964).
5. Asherson, G. L., Allison, A. C. and Zambaea, N.: Immunology 22, 465 (1972).