This study used reverse transcriptase-polymerase chain reaction techniques to detect transcripts of the leukemia-specific chromosome fusion gene, TEL/AML1, and to monitor the expression levels of the TEL-AML1 fusion transcript in ALL patients at sequential intervals during their treatment course.     ///    TEL/AML1 fusion gene in childhood acute lymphoblastic leukemia in southern Taiwan..     ///    The incidence of the TEL/AML1 fusion gene in this study was 32%.     ///    Blotting analysis of the levels of the TEL-AML1 fusion transcript was used to detect minimal residual disease.     ///    The clinical features of our eight TEL/AML1-positive ALL cases were similar to those in other studies.     ///    Reduced levels of TEL/AML1 expression were found in four of the six patients whose bone marrow or peripheral blood samples were obtained after treatment. 