Fig. 3From: Metabolomic profiles of induced pluripotent stem cells derived from patients with rheumatoid arthritis and osteoarthritisAnalytic LC-mass data of OA FLS, RA FLS, OA iPSC, and RA iPSCs. a Integrated peak area of nicotinamides was shown in the OA, RA FLS group and the OA, RA iPSC group. Data presented mean ± SEM. All data was analyzed by Student’s t test. *p < 0.05, **p < 0.01, ***p < 0.001. b Fragment mass peak of nicotinamide. c–f Mass peak histogram of nicotinamide in the OA, RA FLS group and the OA, RA iPSC group. Each NL expressed peak areaBack to article page