tokens: MATERIALS AND METHODS : Formalin-fixed paraffin sections were used for immunostaining of Bcl-6 .
folded_tokens: materials and methods : formalin-fixed paraffin sections were used for immunostaining of bcl-6 .
labels: O O O O B-other_organic_compound I-other_organic_compound I-other_organic_compound O O O B-other_name O B-protein_molecule O