HDAC3 and bronchopulmonary dysplasia: The immunofluorescence assay showed that the MVD of hyperoxia + Hdac3−/−-treated mice was markedly higher than that of BPD mice, and the MVD of hyperoxia + Hdac3−/− + miR-17-antagomir-treated mice was similar to that of the hyperoxia-induced BPD mice (Fig. 6E).