A. MS-proteomic analysis of RCS chondrocytes treated with vehicle (5% ABS) and FGF18 (50 ng/mL) for 16 hours. Biological processes and cellular components regulated by FGF signaling are shown. FDR <0.05. N=4 biological replicates/treatment were analyzed. p-value was calculated using 1D annotation enrichment test based on Wilcoxon-Mann-Whitney test. 