Fig. 3From: The effect of intra-articular botulinum toxin A on substance P, prostaglandin E2, and tumor necrosis factor alpha in the canine osteoarthritic jointSynovial fluid (a) and serum (b) PGE2 in osteoarthritic dogs treated with IA BoNT A or placebo. The concentrations are presented as median and interquartile range. A: n = 12 for the IA BoNT A group, n = 7 for the placebo group; B: n = 17, n = 16; respectivelyBack to article page