The results suggest that we may easily monitor MRD in patients with t(8;21) AML through quantitative analysis of AML1-ETO transcripts in blood samples..     ///    "The ratio of the absolute copy number of a target gene (AML1-ETO) to a control gene (glyceraldehyde-3-phosphate dehydrogenase, GAPDH) was calculated by using a fluorescence curve prepared from amplicons of serially diluted standard RNA. "    ///    There was 10(-5)-fold difference in AML1-ETO mRNA expression between PB samples in the acute phase and those in CR.     ///    "The method was simple, rapid and reproducible for the quantity of chimeric AML1-ETO (MTG8) transcripts. "