Fig. 1

IUI impaired lung development. A Pregnant C57BL/6 mice were intraperitoneally injected with either LPS or saline on E12.5. B, C Mortality and mean body weight of neonatal mice. D–F Measurement of alveolar number and alveolar size in the lung tissues of neonatal mice. Representative image of the lung tissue stained with hematoxylin and eosin. Scale bars, 200 μm. G, H Immunohistochemistry detection of CD31 in the lung tissues of neonatal mice. Scale bars, 100 μm. Data show mean ± SEM; Data was analysed using unpaired t-tests