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(A) Expression of fluorescent proteins and cellular morphology of each group were observed under fluorescence microscope and ordinary inverted phase contrast microscope, respectively, scale bar = 100 μm; (B) FGF-2 mRNA expression was detected by qRT-PCR; (C) FGF-2 protein expression was detected by Western blot. FGF-2 = fibroblast growth factor 2; qRT-PCR = quantitative real-time reverse transcription PCR.
