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(A and B) The mRNA levels of P21 in (A) U2OS and (B) MG63 cells transfected with NC inhibitor or miR-93 inhibitor, respectively, were determined by reverse-transcription quantitative polymerase chain reaction analysis. (C and D) Western blot analysis was used to examine the protein levels of P21. Non-transfected were used as a Control. **P<0.01 vs. Control. NC, negative control; miR, microRNA.
