VEGFA and bronchopulmonary dysplasia: As shown in Figure 4A, VEGF was significantly downregulated in BPD mice, which is consistent with the evidence that VEGF is decreased in infants dying with BPD and VEGF promotes lung angiogenesis and prevents alveolar damage in hyperoxia-exposed rats; injections of CB-MNCs restore their expression to the level comparable with the normoxia controls.