In situ hybridizations of adult murine tissues demonstrate Spi-B mRNA in the medulla of the thymus , the white pulp of the spleen , and the germinal centers of lymph nodes .
in situ hybridizations of adult murine tissues demonstrate spi-b mrna in the medulla of the thymus , the white pulp of the spleen , and the germinal centers of lymph nodes .
O B-other_name I-other_name O B-tissue I-tissue I-tissue O B-protein_molecule O O O B-tissue O O B-body_part O O O O O O B-body_part O O O B-tissue I-tissue O B-body_part I-body_part O