| 摘要 |
<p>A method for the ex-vivo expansion of mammalian hematopoietic stem cells (HSC) comprises culturing isolated HSC in a culture system comprising a culture medium in the presence of a stem cell expansion promoting factor (SCEPF) which may be obtained by culturing murine stromal cells in the presence of an amount of leukemia inhibitory factor (LIF) sufficient to stimulate the production and secretion of said expansion promoting factor.</p> |
