At the same time, the proportion of Th17 in the LPS + mBM-MSC and LPS + mBM-MSC-NC groups decreased significantly compared to that in the ARDS group (p < 0.05), and the proportion in the LPS + mBM-MSC-TGFβ1 group decreased further relative to that in the LPS + mBM-MSC-NC group (p < 0.05, Fig. 5b). Here, TGFB1 is linked to acute respiratory distress syndrome.