abstract |
Provided is a crosslinked GAG, wherein the crosslinked GAG has the following crosslinking group bonded by an amide bond derived from a carboxyl group of the GAG molecule -CONH-R 1 -X-R 2 -NHCO-, or -CONH-R 3 -X-R 4 -X'-R 5 -NHCO- [where the symbols in the formula are defined as indicated in the description]. |