tokens: Northern blot analysis of RNA purified from B cells treated with TGF-beta for varying time intervals revealed a significant decrease in steady state kappa and lambda L chain mRNA levels .
folded_tokens: northern blot analysis of rna purified from b cells treated with tgf-beta for varying time intervals revealed a significant decrease in steady state kappa and lambda l chain mrna levels .
labels: B-other_name I-other_name I-other_name O O O O B-cell_type I-cell_type O O B-protein_molecule O O O O O O O O O O O O O O O O O O O