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Patterned and switchable surfaces for biomaterial applications

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Transfection efficiency (%)Transfection efficiency (%)Chapter 2 – Spatially controlled electro-stimulated DNA adsorption <strong>and</strong> desorption <strong>for</strong> biodevice<strong>applications</strong>(A)403020100-200-400-600-800-1000Voltage (mV)(B)403020100 1 2 3 4 5Time (min)Figure 2.8. Transfection efficiency of HEK 293 cells expressing pEGFP-N1 onALAPP substrate after 24 hr culture period; (A) with the application ofvarious voltage magnitudes <strong>for</strong> 2 mins, (B) with the application of -750 mV<strong>for</strong> various lengths of time. Error bars are to 95% confidence.2-92

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