tokens: Since the CTL response to virus infection is often focused on one or a few immunodominant epitopes , one approach to circumvent this response is to create vectors that lack these immunodominant epitopes .
folded_tokens: since the ctl response to virus infection is often focused on one or a few immunodominant epitopes , one approach to circumvent this response is to create vectors that lack these immunodominant epitopes .
labels: O O B-cell_type O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O O O O O O O B-other_artificial_source O O O B-protein_family_or_group I-protein_family_or_group O