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The mRNA expression and protein levels were detected by qRT-PCR (A), agarose gel electrophoresis (B), and Western blot (C, D) after transfection of MDA-MB-231 breast cancer cells with three different pairs of siRNA. si-1, si-2, and si-3 represent different sequences of siSIRT7. **p<0.01 and ***p<0.001.
Abbreviation: NC, negative control.
