At high concentration of NE , all of the TR bound to TREp was more greatly retarded than in the absence of NE .
at high concentration of ne , all of the tr bound to trep was more greatly retarded than in the absence of ne .
O O O O B-cell_component O O O O B-protein_family_or_group O O B-DNA_domain_or_region O O O O O O O O O B-cell_component O