1. Ogilvie, B. M., and Jones, V. E., Cellular and Humoral Mechanisms in Anaphylaxis and Allergy, 13–22 (Karger Basel, 1969).
2. Sadun, E. H., in Immunity to Animal Parasites (edit. by Soulsby, E. J. L.), 97–129 (Academic Press, 1972).
3. Johansson, S. G. O., Melbin, T., and Vahlquist, B., Lancet, i, 1118–1121 (1968).
4. Rosenberg, E. G., Whalen, G. E., Bennich, H., and Johansson, S. G. O., New Engl. Jl Med., 238, 1148–1149 (1970).
5. Bennich, H., and Johansson, S. G. O., Adv. Immun., 13, 1–55 (1971).