1. Wilson, D.W. and Wilson, H.C. (1962), J. Biol. Chem. 237.
2. Miller, L.L., Bly, C. G., Watson, M.L. and Bale, W.F. (1951), J. Exp. Med. 94, 431.
3. Schimassek, H. (1963), Biochem. Z. 336, 460.
4. Haeckel, R. and Haeckel, H. (1972), Diabetologia 8, 117.
5. Haeckel, R. (1976), J. Clin. Chem. Clin. Biochem. 14, 101.