COMPOSITE PARTICLE AND CELL PREPARATION USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide composite particles which can sufficiently hold cells thereon for a period of time until an effect of the transplanted cells is developed, and to provide a cell preparation including the composite particles with the cells supported thereon.SOLUTION: The purpose of the invention can be achieved by composite particles each of which includes inorganic particles adsorbed on a surface of a particle composed of an L-lactide-&egr;-caprolactone copolymer, wherein the constitutional molar ratio of L-lactide to an &egr;-caprolactone in the copolymer is approximately 75/25. Furthermore, a cell preparation including cell-supporting composite particles, which includes cell-supporting composite particles produced by supporting cells on the composite particles is provided.