Relative gene expression of SOX17 compared to ACTβ in control and patient ECFC following exposure to known PAH stimuli. Individual data points represent individuals, n=5 controls, n=11 patients. Vehicle/treatments in 2% FBS EC media. LPS, lipopolysaccharide (2µg/ml). DMOG, Dimethyloxalylglycine (100µM), BMP9, bone morphogenetic protein-9 (10ng/ml). Ordinary 1-way ANOVA within groups compared to baseline condition with Dunnett’s multiple comparisons test. **-p<0.01, ***-p<0.005, ****-p<0.001.