Yaa gene has no effects on the differentiation and development of the bone marrow B cell lineage cells in SLE BXSB mice, suggesting that its activity only appears in the peripheral mature B cells.

• Yaa基因对BXSB小鼠骨髓中B细胞系细胞的分化发育无影响 ,提示Yaa基因仅在外周免疫器官的成熟B细胞中表达活性 ;