Fig. 3From: Exosomal miRNA-128-3p from mesenchymal stem cells of aged rats regulates osteogenesis and bone fracture healing by targeting Smad5a, b The mRNA expression levels of Runx2, ALP and Col I (n = 5, PBS vs Age-Exos, P < 0.05, Age-Exos vs Young-Exos, P < 0.05). c, d ALP staining and Alizarin Red staining after 7 or 14 days of incubation with ExosBack to article page