 This is the first report to comprehensively characterize the E2A-HLF fusion generated from the t(17;19)(q22;p13) translocation in childhood B-lineage acute lymphoblastic leukemia.     ///    Characterization of the t(17;19) translocation by gene-specific fluorescent in situ hybridization-based cytogenetics and detection of the E2A-HLF fusion transcript and protein in patients' cells..     ///    "E2A gene rearrangement and E2A-HLF transcript and protein expression were determined using conventional cytogenetics, fluorescent in situ hybridization, reverse transcriptase polymerase chain reaction and Western blotting in leukemic cells from three patients.. "