1. Robb, R. J., Humphreys, R. E., Strominger, J. L., Fuller, T. C., and Mann, D. L., Transplantation, 19, 445–447 (1975).
2. Nilsson, K., Evrin, P. E., and Welsh, K. I., Transplant. Rev., 21, 53–84 (1974).
3. Faulk, W. P., Conochie, L. B., Temple, A., and Papamichail, M., Nature, 254, 123–125 (1975).
4. Webb, J., and Dorling, J., J. Immun. Meth., 2, 145–157 (1972).
5. Gibofsky, A., Jaffe, E. A., Fotino, M., and Becker, C. G., J. Immun., 115, 730–733 (1975).