A-F: CSRP2 expression in bone marrow samples from (A) newly-diagnosed (ND) B-cell ALL and healthy donors (HD); (B) adult and childhood B-cell ALL; (C) ND adult B-cell ALL, and patients with complete remission (CR), relapsed and refractory B-cell ALL; (D) patients with MRD determined by FCM <0.01% and >0.01% in patients with CR; (E) ND adult B-cell ALL with different karyotypes; (F) nine patients with de novo disease who experienced CR and then relapsed. G: Correlation between MRD monitored by CSRP2 and that monitored by FCM. H: Correlation between MRD monitored by CSRP2 and that monitored by BCR-ABL in serial dilution of diagnosis cDNA. *: P<0.05; **: P<0.01; ***: P<0.001.