Effects of OM on hyperoxia-induced H2O2 generation in HPMEC: Human pulmonary microvascular endothelial cells (HPMEC) treated with DMSO, OM 5, or OM 100 were exposed to air or hyperoxia for up to 24 h, following which the H2O2 levels was measured by ROS-Glo™ H2O2 assay. Data are representative of at least three independent experiments. Values are presented as means ± SEM (n=3). Two-way ANOVA showed an effect of hyperoxia and OM 100 and an interaction between them for the dependent variable, H2O2 levels, in this figure. Significant differences between air- and hyperoxia-exposed cells are indicated by *, p<0.05. Significant differences between hyperoxia-exposed DMSO-, OM 5-, and OM 100–treated cells are indicated by †, p<0.05. Significant differences between air-exposed DMSO-, OM 5-, and OM 100–treated cells are indicated by π, p<0.05.