Restimulation of T cell blasts up-regulates Fas and Fas ligand expression , with subsequent interaction leading to cell death .
restimulation of t cell blasts up-regulates fas and fas ligand expression , with subsequent interaction leading to cell death .
O O B-cell_type I-cell_type I-cell_type O B-protein_molecule O B-protein_molecule O O O O O O O O B-other_name I-other_name O