妊娠小鼠的胎肝或妊娠4～5个月的人胎肝中都存在着丰富的多能造血干细胞,它和骨髓中的多能干细胞有类似的生物学特性,是造血干细胞的又一重要来源。近年来,人的胎肝细胞经临床移植或输注已初步表明有一定的应用价值。然而人之间的胎肝移植(FLT)要取得持久性植活或提高植活率尚需在动物实验、实验室和临床方面做许多研究工作,目前不少国 Abundant pluripotent hematopoietic stem cells are present in the fetal liver of pregnant mice or in fetal liver from 4 to 5 months of gestation. They have similar biological characteristics to pluripotent stem cells in bone marrow and are another important factor in hematopoietic stem cells source. In recent years, human fetal liver cells by clinical transplantation or infusion has initially shown a certain value. However, there is still a great deal of research work on animal experiments, laboratories and clinics to achieve long-term survival or improve the survival rate of human fetal liver transplantation (FLT). At present, many countries