CROSS-LINKED BODY, CROSS-LINKING AGENT COMPOSITION, FIBROUS CROSS-LINKED BODY, PRODUCTION METHOD OF FIBROUS CROSS-LINKED BODY, CELL CULTURE BED, CELL CULTURE METHOD USING THE CELL CULTURE BED AND PRODUCTION METHOD OF CELL SHEET FOR IMPLANTATION USING THE CELL CULTURE BED

摘要

PROBLEM TO BE SOLVED: To provide a cross-linked body which uses polyglutamic acid as a raw material, does not gel even when absorbing moisture and/or water and has water resistance and a raw material (cross-linking agent composition) which shows a long pot life in producing the cross-linked body.SOLUTION: A cross-linked body is composed of polyglutamic acid and/or a polyglutamate and is cross-linked with a carbodiimide of a number average molecular weight of 1,000 or greater. A cross-linking agent composition comprises polyglutamic acid and/or a polyglutamate and a carbodiimide compound of a number average molecular weight of 1,000 or greater.