Figure 2From: Cytokine profile of autologous conditioned serum for treatment of osteoarthritis, in vitroeffects on cartilage metabolism and intra-articular levels after injectionProteoglycan and DNA content during culture of cartilage explants (mean +/- SD). Proteoglycan and DNA content of cartilage explants after culturing with unconditioned serum (n = 24) or conditioned serum (CS, n = 24 cartilage explants). (a) Proteoglycan content. (b) DNA content, (c) PG/DNA ratio.Back to article page