ANXA5 and bronchopulmonary dysplasia: In the analysis of the hydrogen peroxide-mediated cells with annexin-V expression, the percentage of apoptosis of recombinant Hsp-70 pretreated primary epithelial cells from the TA of patients with BPD was decreased compared with the IgG control group in patients with BPD (4.8 ± 0.6 vs. 8.4 ± 1.7%, p < 0.05; Figure 4A).