Fig. 2From: Follistatin-like 1 protects mesenchymal stem cells from hypoxic damage and enhances their therapeutic efficacy in a mouse myocardial infarction modelConstruction of Fstl1-overexpressing MSCs. a Transduction efficiency of engineered MSCs evidenced by mCherry reporter expression. Scale bar = 50 μm. b Fstl1 transcription in engineered MSCs was assessed by qRT-PCR (n = 4). c Protein level of Fstl1 in engineered MSCs was determined by western blot analysis. d Flow cytometry analysis of cell surface antigens of genetically modified MSCs. Unstained and isotype controls are indicated by red and green spectra, respectively. **P < 0.01; ***P < 0.001Back to article page