tokens: We have studied the expression of EBV proteins in 17 cases of EBV-positive endemic BL by immunohistology .
folded_tokens: we have studied the expression of ebv proteins in 17 cases of ebv-positive endemic bl by immunohistology .
labels: O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O B-other_name I-other_name I-other_name O B-other_name O