| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain undifferentiated precursor cells such as CD34 positive cells as a proliferative group of undifferentiated cells without inhibiting the proliferation of them. <P>SOLUTION: The subject cell-culturing tool is characterized by containing cells expressing δ1 on the cell surfaces, or an insoluble material making the δ1 as a solid phase, and also ≥1 kind cytokine (excluding FL) including thrombopoietin, and a method for producing a cell preparation by using the cell-culturing tool is disclosed. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
