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Efficiency of Meis1 RNAi sequence. (A) A549 cells were transfected with RNAi as indicated for 72 h and then the mRNA levels were determined with specific primers (mean ± SD, n=3; ***, P<0.001); (B) cells were treated as in (A) and then subjected to western blotting analysis. The experiments were performed for at least three times and representative images were shown. RNAi, RNA interference; SD, standard error of the mean.
