1. Mendelsohn, J., Skinner, A., and Kornfeld, S., J. clin. Invest., 50, 818–26 (1971).
2. Cooper, H. L., in The cell cycle and cancer (edit. by Baserga, R.), 197 (Dekker, New York, 1971).
3. Elves, M. W., The lymphocytes, 381–457 (Year Book Medical Publishers, Chicago, 1972).
4. Scriver, C. R., and Efron, M. L., in The metabolic basis of inherited disease (edit. by Stanbury, J. B.), 351–369 (McGraw-Hill, New York, 1972).
5. Phang, J. M., Downing, S. J., and Valle, D., Anal. Biochem., 55, 272–7 (1973).