PROBLEM TO BE SOLVED: To provide a culturing container for developing an embryoid (EB), developing the EB having a high quality from an embryonic stem cell (ES cell) easily in a good efficiency, and to provide a method for producing the same and a method for developing the EB. SOLUTION: This method for producing the culturing container for developing the EB comprises the water-soluble resin-covering layer-forming process of forming a water-soluble covering layer by covering the inner surface of the culturing container with the water-soluble resin and after that process, the water-insoluble cured film-modifying process of curing the water-soluble covering layer to modify to the water-insoluble cured film layer, and the produced culturing container for developing the EB is also provided. Further, the method for developing the EB is provided by seeding and culturing non-differentiated embryonic stem cells in the container for developing the EB. COPYRIGHT: (C)2008,JPO&INPIT
