tokens: More frequent use of the classical Oct2a and Oct2b isoforms was observed in the lipopolysaccharide -stimulated B cells , while a preference for the Oct2ab and Oct2ba isoforms was observed in lipopolysaccharide plus phorbol-di-butyrate -treated cells .
folded_tokens: more frequent use of the classical oct2a and oct2b isoforms was observed in the lipopolysaccharide -stimulated b cells , while a preference for the oct2ab and oct2ba isoforms was observed in lipopolysaccharide plus phorbol-di-butyrate -treated cells .
labels: O O O O O O B-protein_molecule O B-protein_molecule O O O O O B-lipid O O O O O O O O O B-protein_molecule O B-protein_molecule O O O O B-lipid O B-other_artificial_source O O O