tokens: By electrophoresis mobility shift assays using probes corresponding to different segments of the putative human c-myb intron 1 transcription pause region and nuclear extracts from myeloid leukemia HL 60 and fibroblast WI 38 cells , we detected a HL-60 specific DNA protein complex with a 123-bp fragment containing binding sites for the interferon regulatory factors ( IRFs ) nuclear proteins .
folded_tokens: by electrophoresis mobility shift assay use probe correspond to different segment of the putative human c-myb intron 1 transcription pause region and nuclear extract from myeloid leukemia hl 60 and fibroblast wus 38 cell , we detect a hl-60 specific dna protein complex with a 123-bp fragment contain binding site for the interferon regulatory factor ( irf ) nuclear protein .