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B cell subsets and dysfunction of regulatory B cells in IgG4-related diseases and primary Sjögren’s syndrome: the similarities and differences

Wei Lin, Lixia Jin, Hua Chen, Qingjun Wu, Yunyun Fei, Wenjie Zheng, Qian Wang, Ping Li, Yongzhe Li, Wen Zhang*, Yan Zhao, Xiaofeng Zeng and Fengchun Zhang

Arthritis Research & Therapy 2014, 16:R118  doi:10.1186/ar4571