Cultured MCF-7 cells , derived from a pleural effusion of a breast cancer patient , known to contain high levels of ER were used as a positive control ( 40-48% ER positive cells by immunocytochemistry ; 200 fmol/mg protein by EIA ) .
cultured mcf-7 cells , derived from a pleural effusion of a breast cancer patient , known to contain high levels of er were used as a positive control ( 40-48% er positive cells by immunocytochemistry ; 200 fmol/mg protein by eia ) .
B-cell_line I-cell_line I-cell_line O O O O B-other_name I-other_name O O B-multi_cell I-multi_cell I-multi_cell O O O O O O O B-protein_family_or_group O O O O O O O O B-protein_family_or_group O O O O O O O O O O O O