Fig. 2From: Flavonoids, alkaloids and saponins: are these plant-derived compounds an alternative to the treatment of rheumatoid arthritis? A literature reviewBiological activities of alkaloids and saponins in RA. Legends: FLS- fibroblast-like synoviocytes, NFkB - nuclear factor ĸB, IL- interleukin, IFN - interferon, TNF - tumor necrosis factor, ROS - reactive oxygen species and NO - nitric oxideBack to article page