Fig. 3From: Intra-articular interleukin-1 receptor antagonist (IL1-ra) microspheres for posttraumatic osteoarthritis: in vitro biological activity and in vivo disease modifying effectSerum IL-1 ra concentrations following intra-articular administration of IL-1 ra or PLGA IL-1 ra. *p < 0.001. Data represents the average ± SD of 6 animals in each experimental groupBack to article page