Q-PCR analysis of proteoglycan core protein gene expression in hNSC H9 cells and nhNPCs. Relative expression in hNSC H9 cells and nhNPCs of: cell surface HSPGs (A) syndecans; (B) glypicans; and extracellular CSPGs and HSPGs (C) aggrecan, versican, perlecan and decorin. Relative expression normalised to 18 S, error bars=SD, statistical significance: ⁎p<0.05, ⁎⁎p<0.01, ⁎⁎⁎p<0.001.