The ratio of CR and the time of disease free surival (DFS) with the MDR 1 +/CD 34 + phenotgpe was significantly less than those of the MDR 1 -/CD 34 - phenotype.

• MDR1 + / CD34+表型细胞较 MDR1 - / CD34-表型细胞缓解率、生存期、缓解期显著缩短。