1. Andrews, P. (1964). Biochem. J., 91, 222.
2. Carnegie, P. R., and Pacheco, G. (1964). Ibid., 92, 7p. Determann, H. (1962). Experimentia (Basel), 18, 430.
3. Dextran Gels and Their Applications in Gel Filtration;Flodin, P.,1962
4. Killander, J. (1962). Biochim. biophys. Acta (Amst.), 63, 403.
5. Grant, G. H. (1964a). In Recent Advances in Clinical Pathology, ch. 20, edited by S. C. Dyke, Churchill, London. (1964b). Proc. Ass. clin. Biochem., 3, 55.