1. 1) E. R. Gold and P. Balding: Receptor-specific proteins. Amsterdam, Excerpta, Medica, 1975.
2. 2) Y. Shimizu and H. Kamiya: Bioactive marine biopolymers, in “Ma-rine Natural Products” (ed. by P. Scheuer), Vol. 5. New York, Aca-demic Press, 1983, pp. 391-427.
3. 3) G. Vasta: The multiple biological roles of invertebrate lectins: Their participation in nonself recognition mechanisms, in ”Phylogenesis of immune functions“ (ed. by G. W. Warr and N. Cohen), Boston, CRC Press, 1991, pp. 73-101.
4. 4) N. Sharon and H. Lis: Lectins. London, Chapman and Hall, 1989.
5. 5) K. Drickamer and M. E. Tayler: Biology of animal lectins. Ann. Rev. Cell. Biol., 9, 237-264 (1993).