1. Baudouin, A., Lewin, J., and Hillion, P. (1953). C.R. Soc. Biol. (Paris), 147, 1036.
2. Boyce, W. H., Garvey, F. K., and Norfleet, C. M. (1954). J. clin.
3. clearance ratios measured by paper electrophoresis are difficult to interpret (Wolvius;Verschure, Feinberg; G, J.;Nature (Lond.),1956
4. Gavrilesco, K., Courcon, J., Hillion, P., Uriel, J., Lewin, J., and Grabar, P. (1955). Bull. Soc. Chim. biol. (Paris), 37, 803.
5. Gell, P. G. H. (1955). J. clin. Path., 8, 269.