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Molecular signaling activated by BMP9 treatment in GBM primary cells. Immunoblotting of indicated proteins following 3–6 h of BMP9 treatment at 30 ng/ml (HuTuP175). a Relative mRNA expression of SMADs target genes relative to untreated cells (0 h) (HuTuP108/175). Data are presented as mean ± S.E.M of N = 3 independent experiments (b). *p < 0.05; **p < 0.01; ***p < 0.001 by paired t-test
