| abstract |
A substrate suitable for cell culture in the field of regenerative medicine is provided. [MEANS FOR SOLVING PROBLEMS] It is made of a bioabsorbable polymer, has a porosity of 10 to 90%, a pore size of 10 to 800 μm, and further has five pores having pores on the surface and a pore size of 200 μm or more on at least one surface. / porous material 1 mm 2 occur more than, and different porosity is characterized by continuously existing gradient structure. [Selection figure] None |