Fraser, P.

globin expression locus signal mouse transcription transgene result figure level liver region probe control analysis number fragment effect promoter position grosveld chromatin globin gene transcript transcriptional deletion element globin genes erythroid erythroid cells wijgerde globin locus hypersensitive liver cells sequence hybridization acids research activation nuclease b globin locus percentage development apovldl dnase protein intron mechanism interaction regulation table hypersensitive sites competition blood adult transcript signals copy number copy numbers nf-l gene b globin gene chromatin structure structure assay activity globin gene expression fraser research factor heterochromatin elongation background concentration table i distance stroubouli dillon 5 hs 3 model γ genes tissue presence