tokens: In situ hybridization and Northern blot analysis suggest that Spi-B gene expression increases during B cell maturation and decreases during T cell maturation .
folded_tokens: in situ hybridization and northern blot analysis suggest that spi-b gene expression increases during b cell maturation and decreases during t cell maturation .
labels: B-other_name I-other_name I-other_name O B-other_name I-other_name I-other_name O O B-protein_molecule O O O O B-other_name I-other_name I-other_name O O O B-other_name I-other_name I-other_name O