Fig. 1

Alleviation of BPD with SP. A HE staining showed that the alveolar space was thickened and the alveolar space was reduced in BPD mice, which was reversed by SP intervention. Scale bars, 50 μm, n = 6/group. B The lung RAC of BPD mice decreased, and the reduction of RAC was increased in the SP treatment group. C BPD mice lost weight, and mice treated with SP gained weight.