Here we have investigated the transcriptional regulation of the gamma chain gene by analyzing the 2 . 5-kilobase sequence upstream of the transcription start site .
here we have investigated the transcriptional regulation of the gamma chain gene by analyzing the 2 . 5-kilobase sequence upstream of the transcription start site .
O O O O O O O O O B-protein_domain_or_region I-protein_domain_or_region O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O B-DNA_substructure I-DNA_substructure I-DNA_substructure O