In case 2, the blast cells expressed CD(13) (38.8%), CD(33) (31.8%), CD(34) (80.9%), and CD(19) (63.9%) and RT-PCR assay revealed no AML1/ETO fusion gene transcript.     ///    "AML1/ETO fusion gene was tested by ""nested"" reverse transcriptase-polymerase chain reaction (RT-PCR). "