Partial mapping the associated B cell epitope in pp65 antigen found that only the pp65-3, that cover one third of the entire pp65 on the C terminal, was recognized by sera of SLE patients.

• 进一步分析，发现只有在靠近pp65 蛋白质C 端，约全长三分之一大小的片段(我们命名为pp65-3 )会被红斑性狼疮病人血清辨识。