Spi-B expression is very abundant in B cells and both Spi-B mRNA and protein are detected in some T cells .
spi-b expression is very abundant in b cells and both spi-b mrna and protein are detected in some t cells .
B-protein_molecule O O O O O B-cell_type I-cell_type O O B-protein_molecule O O O O O O O B-cell_type I-cell_type O