To provide a purification method of a retinal pigment epithelial cell capable of acquiring at a short time, a retinal pigment epithelial cell with high purity with a simple operation from a cell population acquired by differentiation-inducing from a pluripotent stem cell to the retinal pigment epithelial cell.SOLUTION: There is provided a purification method for introducing a cell population including a retinal pigment epithelial cell obtained by differentiation-inducing of a pluripotent stem cell on a laminin or fragment thereof into a filter, then acquiring a cell population having passed the filter.SELECTED DRAWING: Figure 1【課題】多能性幹細胞からの網膜色素上皮細胞への分化誘導により得られる細胞群から、簡易な操作で高い純度の網膜色素上皮細胞を短期間で得ることができる、網膜色素上皮細胞の純化方法の提供。【解決手段】多能性幹細胞をラミニン又はそのフラグメント上で分化誘導して得られた網膜色素上皮細胞を含む細胞群をフィルターに導入し、フィルターを通過した細胞群を得る工程を含む、純化方法。【選択図】図１
