A series of uninfected parental HL-60 subclones all reduced TR75 surface expression in response to TNF-alpha treatment .
a series of uninfected parental hl-60 subclones all reduced tr75 surface expression in response to tnf-alpha treatment .
O O O B-cell_line I-cell_line I-cell_line I-cell_line O O B-protein_molecule O O O O O B-protein_molecule O O