1. McDevitt, H.O., Landy, M., Genetic control of immune responsiveness. Academic Press, New York. (1972).
2. Plant, J. Glynn, A.A., J. inf. Disc. 133 (1976) 72.
3. North, R.J., in Mechanisms of Cell Mediated Immunity, ed. R.J. McClusky, S. Cohen. John Wiley & Sons, New York. (1974).
4. Miki, K., Mackaness, G.B., J. exp. Med. 120 (1964) 93.
5. Cheers, C., McKenzie, I.F.C., Inf. Imm. 19 (1978) 755.