Thus , the dioxin receptor system provides a complex and interesting model of the regulation of transcription factors by hsp90 .
thus , the dioxin receptor system provides a complex and interesting model of the regulation of transcription factors by hsp90 .
O O O B-inorganic O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O B-protein_molecule O