By titrating the oestrogen concentration in these stably transfected cells , the growth retarding and the transactivating function of the chimeric proteins could not be dissociated .
by titrating the oestrogen concentration in these stably transfected cells , the growth retarding and the transactivating function of the chimeric proteins could not be dissociated .
O O O B-lipid O O O B-cell_line I-cell_line I-cell_line O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O O