tokens: In addition , BHRF1 protected these cells from monocyte-mediated killing but failed to protect them from killing mediated by lymphokine-activated killer cells .
folded_tokens: in addition , bhrf1 protected these cells from monocyte-mediated killing but failed to protect them from killing mediated by lymphokine-activated killer cells .
labels: O O O B-protein_molecule O O O O B-other_name I-other_name O O O O O O O O O B-cell_type I-cell_type I-cell_type O