Since T cells normally express Bcl-2 and Bcl-xL following activation , their inability to block Fas -mediated apoptosis may allow for the elimination of self-reactive cells and the appropriate regulation of immune responses .
since t cells normally express bcl-2 and bcl-xl following activation , their inability to block fas -mediated apoptosis may allow for the elimination of self-reactive cells and the appropriate regulation of immune responses .
O B-cell_type I-cell_type O O B-protein_molecule O B-protein_molecule O O O O O O O B-protein_molecule O O O O O O O O B-cell_type I-cell_type O O O O O B-other_name I-other_name O