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A–B. Real time-PCR detecting miR-320 and IGF-1 mRNA expressions. C–F. Western blots detecting IGF-1 protein expression, IGF-1R and p-IGF-1R levels. Different lowercase letters indicate statistically significant differences (P < 0.05) with the same letter indicating no difference (P > 0.05). Note: miR-320, microRNA-320; IGF-1, Insulin-like growth factor 1; PCR, polymerase chain reaction.
