PROBLEM TO BE SOLVED: To provide gelatin particles which carry accessory components and can be readily taken up by the activity of cells themselves, a method of producing such gelatin particles, cells having such gelatin particles, a production method of cells having such gelatin particles and cell structure including cells having gelatin particles.SOLUTION: Gelatin particles comprise gelatin as the primary component and accessory components which are carried by the gelatin. When the average particle diameter of the gelatin particles is X, the ratio of the average concentration A (mass%) of the accessory components included in a surface layer part at a thickness of 0.01X from the surface of the gelatin particle with respect to the total mass of the gelatin particle to the average concentration B (mass%) of the accessory components included further inside the particle than the surface layer part with respect to the total mass of the gelatin particle A/B is less than 0.25.SELECTED DRAWING: None【課題】副成分を担持し、且つ細胞自らの活動による取り込みがなされやすいゼラチン粒子、そのようなゼラチン粒子の製造方法、そのようなゼラチン粒子を有する細胞、そのようなゼラチン粒子を有する細胞の製造方法、およびゼラチン粒子を有する細胞を含有する細胞構造体を提供すること。【解決手段】本発明は、主成分となるゼラチンと、前記ゼラチンに担持された副成分とを含むゼラチン粒子であって、前記ゼラチン粒子の平均粒子径をＸとするとき、ゼラチン粒子の全質量に対する、前記ゼラチン粒子の表面から厚み０．０１Ｘの表層部に含まれる副成分の平均濃度Ａ（質量％）と、ゼラチン粒子の全質量に対する、前記表層部よりも粒子の内側に含まれる副成分の平均濃度Ｂ（質量％）との比Ａ／Ｂが０．２５未満である、ゼラチン粒子。【選択図】なし
