1. Wilchek, M., Miron, T., and Kohn, J. (1984),Affinity chromatogroaphy. Meth. Enzymol. 104, 3.
2. Weare, J. A., Gafford, J. T., Ur, N. S., and Erdos, E. G. (1982),Anal. Bio-chem. 123, 310.
3. Janolino, V. G. and Swaisgood, H. E. (1975),J. Biol. Chem. 250, 2532.
4. Baumrucker, C. R. (1980),J. Dairy Sci. 63, 49.
5. Weetall, H. H. (1976),Meth. Enzymol. 44, 134.