RT-PCR analysis from patient and control cDNAs. (A) ETV6-CDX2 (primers TG and R4) from patients 1, 2, and 3, normal BM and PB leukocytes. (B) CDX2 (primers R6 and R4) from the same patients and (C) CDX2 and ABL from 10 patients with myeloid blast crisis of CML (lanes 1 through 10) or AML (lanes 11 through 20).