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Decrease of integrin β1 (ITGB1) and integrin α2 (ITGA2) protein expression by transfection of RFP siRNA. (a) Total lysates from HEC50, MDA‐MB‐231, and HeLa cells were subjected to western blotting with RFP or integrin antibodies (indicated at left side). (b) Expression levels of ITGB1 and ITGA2 mRNA were analyzed by northern blotting. The ITGB1, but not ITGA2, mRNA level was significantly changed by RFP knockdown.
