The translocation was found to be involved in the AML1 gene on the chromosome 21 and the ETO gene on the chromosome 8, and resulted in the formation of AML1/ETO fusion gene on the derivative chromosome 8.     ///    Diagnosis was made according to FAB and MIC criteria and the expression of AML1/ETO fusion gene was detected with nested RT-PCR.     ///    Here we studied the main clinical data in children with acute non-lymphoid leukemia (ANLL) carrying the AML1/ETO fusion gene.     ///    "In addition, we discussed the significance of the detection of AML1/ETO fusion gene in the diagnosis and prognosis of children with ANLL. "    ///    [Analysis of 21 children with acute non-lymphoid leukemia carrying AML1/ETO fusion gene]..     ///    "RT-PCR for the detection of AML1/ETO in children with ANLL was quick, convenient and sensitive, and could be regarded as a useful method for the diagnosis and prognosis of ANLL.. "    ///    None of them was found carrying AML1/ETO.     ///    "All the 21 patients in group A were found carrying AML1/ETO, and 17 patients (81%) were classified as M(2), the other 4 cases were of M(2) developed from MDS-RAEB-T, M(4Eo), M(5) and eosinophil leukemia, respectively. "