PD-1/PD-L1 governed cross-talk of exhausted CD8+ T and memory B cells in systemic lupus erythematosus oleh Fangfang Sun, Kaiwen Wang, Shuang Ye, Jia Li, Liou Cao, Shuangjun He, Jiangfeng Zhao, Xuemei Feng, Zhangling Xu, Haiting Yang, Jiaer Ye