Fig. 1From: Soufeng sanjie formula alleviates collagen-induced arthritis in mice by inhibiting Th17 cell differentiationIdentification of chemical compounds in SF by HPLC-Q-TOF-MS and quality control of SF. a Representative base peak intensity chromatogram of SF based on HPLC-Q-TOF-MS in positive mode. b HPLC chromatograms of calycosin and protocatechuic acid at 260 nm. c HPLC chromatogram of SF at 260 nmBack to article page