PROBLEM TO BE SOLVED: To discover a new material that can efficiently proliferate stem cells, kept in an undifferentiated state, and provide it as agent for maintaining the undifferentiated state of stem cells or agent for promoting the proliferation of them.SOLUTION: An agent for maintaining the undifferentiated state of stem cells or agent for promoting the proliferation of them contains one or more plant extract selected from Citrus unshiu Marcowicz, Bupleurum falcatum Linne, and Glycyrrhizae radixone.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】幹細胞を、未分化状態を維持させたまま、効率良く増殖させることができる新たな物質を見出し、幹細胞の未分化状態維持剤又は増殖促進剤として提供すること。【解決手段】ウンシュウミカン、ミシマサイコ、及びカンゾウから選択される1種又は2種以上の植物の抽出物を有効成分として含有する、幹細胞の未分化状態維持剤又は増殖促進剤。【選択図】なし
