tokens: In contrast , p65 delta , a naturally occurring splice variant , fails to markedly augment I kappa B protein levels .
folded_tokens: in contrast , p65 delta , a naturally occurring splice variant , fails to markedly augment i kappa b protein levels .
labels: O O O B-protein_molecule I-protein_molecule O O O O O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule O O O