Figure 1. Lung function tests in FG-4095-treated preterm baboons relative to untreated controls. A) Alveolar-arterial PO₂ gradient, B) oxygenation index, C) ventilation index, and D) dynamic lung compliance were measured in untreated controls (black) and baboons treated with FG-4095 (white) (125+14 days pro re nata O₂ model). Data are shown as mean ±SE (control n=10–12; FG-4095 n=3–5); *P 0.05 and ***P 0.001 FG-4095 vs. control.