Comparison of two reverse transcription-polymerase chain reaction methods for detection of AML1/ETO rearrangement in the M2 subtype of acute myeloid leukaemia..     ///     Two reverse transcription-polymerase chain reaction methods to detect the AML1/ETO rearrangement in the M2 subtype of acute myeloid leukaemia those of Downing et al.     ///    The AML1/ETO rearrangement was observed in 5 of the 35 cases of acute myeloid leukaemia at diagnosis (14.3%) and in 3 of the 14 cases of M2 subtype of acute myeloid leukaemia (21.4%). 