Fig. 1
Expression analysis of Fap in OA synovium. a Immunostaining of human FAP in the synovium of control and OA patients. DAPI staining indicates the nucleus. Scale bars: 100 μm. b qPCR analysis of human FAP mRNA levels in the synovium of control and OA patients (n = 8 samples per group). c Western blot analysis of human FAP protein levels in the synovium of control and OA patients (n = 3 samples per group). d Immunostaining of mouse Fap in the knee joint of sham and DMM-treated mice. Sham or DMM surgery was performed in 8-week-old FapLacZ/+ mice, which were sacrificed 8 weeks later, and LacZ immunostaining was used to detect Fap expression at the posterior horn of the medial meniscus (F: femur; T: tibia; M: meniscus; S: synovium). DAPI staining indicates the nucleus. Scale bars: 100 μm. The statistical significance was assessed using two-tailed Student’s unpaired t tests. Data are presented as the mean ± SD (**P < 0.01)
