The proliferation and differentiation of NB4 cells were determined by proliferation curve, morphology, membrane CD antigen and NBT test.

• NB4细胞的生长、分化及功能通过细胞生长曲线、形态学、细胞表面标志及NBT还原试验加以判定，细胞周期应用流式细胞仪进行分析。