tokens: Nuclear matrix-bound RB was detectable in all cases , indicating that loss of RB is not responsible for decreased class II expression in these lines .
folded_tokens: nuclear matrix-bound rb was detectable in all cases , indicating that loss of rb is not responsible for decreased class ii expression in these lines .
labels: O O B-protein_molecule O O O O O O O O O O B-protein_molecule O O O O O O O O O O O O