自１９９０年美国３个研究组几乎同时报道干细胞因子以来，世界各地进行了广泛深入的研究。现将干细胞因子（ＳＣＦ）的研究现状作一综述。１　ＳＣＦ的结构和理化性质干细胞因子又称肥大细胞生长因子（ＭＧＦ），Ｋｉｔ配体（ＫＬ）及Ｓｔｅｅｌ因子（ＳＬＦ）。它是由骨髓微 Since the three U.S. research groups reported stem-cell factors almost simultaneously in 1990, extensive and in-depth studies have been conducted around the world. Now the research status of stem cell factor (SCF) is reviewed. 1 SCF structure and physicochemical properties of stem cell factor, also known as mast cell growth factor (MGF), Kit ligand (KL) and Steel factor (SLF). It is made from bone marrow micro