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Geraniin inhibits constitutive STAT3 activation in glioma cells. a Chemical structure of geraniin. b Western blot analysis of phosphorylated and total STAT3 protein in U87 and LN229 cells treated with different concentrations of geraniin. c Western blot analysis of indicated proteins in U87 and LN229 cells treated with vehicle or 80 μM geraniin. Bar graphs represent densitometric analysis of the Western blots from three independent experiments. *P < 0.05 versus control
