FGF7 and acute respiratory distress syndrome: Regarding MSC-derived EVs for preclinical models of ALI/ARDS, Zhu et al. demonstrated a significant beneficial effect from the intratracheal administration of human BM-MSC-derived microvesicles in an E. coli endotoxin-induced ALI mouse model, in part, through the expression of keratinocyte growth factor (KGF) mRNA in the injured alveolus [76].