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Quantitative real-time PCR analysis of let-7c in influenza virus-infected A549 cells. RNA was isolated from A549 cells after infection with Influenza A/JingFang/86-1(H1N1) virus (A) or influenza A/FM/1/47 (H1N1) virus (B) for 4 or 24 hrs. Let-7c was detected and presented relative to GAPDH mRNA. Data are expressed as mean ± S.E., n = 3, *P < 0.05, #P < 0.01.
