Copyright information:Taken from "Fibroblast activation protein alpha is expressed by chondrocytes following a pro-inflammatory stimulus and is elevated in osteoarthritis"Arthritis Research & Therapy 2006;8(1):R23-R23.Published online 3 Jan 2006PMCID:PMC1526559. SW1353 cells were treated with combinations of IL-1 and OSM for 24 h. Total RNA was extracted and gene expression determined by real-time PCR as described in Materials and methods. The data are presented relative to , and are representative of four separate experiments. * = < 0.05, *** = < 0.001 versus control