High levels of Sp140 mRNA were detected in human spleen and peripheral blood leukocytes , but not other human tissues .
high levels of sp140 mrna were detected in human spleen and peripheral blood leukocytes , but not other human tissues .
O O O B-protein_molecule O O O O B-tissue I-tissue O B-cell_type I-cell_type I-cell_type O O O O B-tissue I-tissue O