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HIF-1α expression in lung tissue of mice. HIF-1α expression was upregulated in the OVA group, mostly expressed in the nuclei of alveolar epithelium, and was reduced in the BUD group. A – OVA group, B – BUD group, C – PBS group, D – percentage of immunostaining alveolar epithelial cells. Magnification is 400×
***p < 0.001
