Using immunofluorescent labelling and western blot techniques, Zhang et al. discovered that stigmasterol at a concentration of 20 g mL−1 displayed an anti-inflammatory effect by reducing NK1-R expression in interleukin 13 (IL-13) induced human lung epithelial BEAS-2B cells.101 Another report investigated the anti-inflammatory effect of GLA against rheumatoid arthritis (RA). The gene discussed is IL13; the disease is rheumatoid arthritis.