Figure 2

Densitometric quantification of MMP mRNA expression in glioblastoma cell-lines. Comparison of densitometrically quantified MMP mRNA expression by human GBM cell-lines SNB19, GaMG, U251, U87, U373, U343 and U138 in arbitrary units. Each value was normalized to the respective GAPDH mRNA expression. Shown are the means of six independent experiments. The standard errors of the mean (SE) are shown as error-bars. Asterisks indicate statistically significant alterations in expression compared to the expression in passage p0, triangles in comparison to the expression in passage p5 (two-tailed t-test, p ≤ 0.05). White columns: passage p0, light grey columns: passage p5, dark grey columns: passage p15.