PROBLEM TO BE SOLVED: To provide methods for generating tissues and organs in vitro or ex vivo, and to provide methods for using such tissues and organs.SOLUTION: This invention relates to a method for forming a three-dimensional tissue or organ comprising depositing at least one cellular composition comprising cells and extracellular matrix (ECM) onto a surface.SELECTED DRAWING: Figure 1【課題】インビトロ又はエクスビボにおいて組織及び器官を作出する方法、使用方法の提供。【解決手段】細胞及び細胞外マトリクス(ECM)を含む少なくとも1種の細胞組成物を表面上に沈着することを含む、3次元組織又は器官の形成方法。【選択図】図1