已有实验证实,造血细胞生长因子的功能之一是可能抑制细胞凋亡(apoptosis),如在细胞凋亡过程中缺乏这些生长因子则造血细胞加速死亡。本实验将人类bcl-2基因转染入IL-3依赖型的多潜能造血细胞系中,在缺乏IL-3,并在含血清和无血清条件下,这些细胞可以存活。同时这些存活伴随有多谱系的分化。更进一步实验发现,单个细胞实验显示: It has been experimentally confirmed that one of the functions of hematopoietic growth factor is that it is possible to inhibit apoptosis. For example, the lack of these growth factors during apoptosis leads to accelerated death of hematopoietic cells. This experiment transfected the human bcl-2 gene into an IL-3-dependent pluripotent hematopoietic cell line in the absence of IL-3 and survived in both serum-free and serum-free conditions. At the same time, these survival accompanied by multi-lineage differentiation. Further experiments found that a single cell experiment showed: