tokens: Two well-characterized Ets family members , Ets-1 and Ets-2 , are reciprocally expressed during T-cell activation .
folded_tokens: two well-characterized ets family members , ets-1 and ets-2 , are reciprocally expressed during t-cell activation .
labels: O O B-protein_family_or_group I-protein_family_or_group O O B-protein_molecule O B-protein_molecule O O O O O B-other_name I-other_name O