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Suppression of EGFP signal in M4A4 breast cancer cells transfected with Accell EGFP pool siRNA on the CBC-1 after 5 days in culture. Photomicrographs show merged bright field (BF) z-stacks and merged green fluorescence z-stacks (eGFP). EGFP Signal was expressed relative to controls (n = 5). a P < 0.05 relative to control. b P < 0.05 relative to 2.5 μM. Magnification: 10×
