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Serum progranulin levels are elevated in patients with systemic lupus erythematosus, reflecting disease activity

Atsushi Tanaka, Hiroshi Tsukamoto*, Hiroki Mitoma, Chikako Kiyohara, Naoyasu Ueda, Masahiro Ayano, Shun-ichiro Ohta, Yasushi Inoue, Yojirou Arinobu, Hiroaki Niiro, Takahiko Horiuchi and Koichi Akashi*

Arthritis Research & Therapy 2012, 14:R244  doi:10.1186/ar4087

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