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Fig. 7 | BioMedical Engineering OnLine

Fig. 7

From: Microfluidic DNA-based potassium nanosensors for improved dialysis treatment

Fig. 7

a DNA nanosensors with a concentration of 25 µM were immobilized on the bottom surface of a microfluidic device channel. The microfluidic device was infused with a syringe pump and imaged with microscope. b A PB + MgCl2 buffer (control) or KCl solution was run through the channel at 0.02 mL/h for 14 min. The normalized integrated fluorescence signal remained constant for the PB + MgCl2 buffer solution, lozenge, while the channels infused with 5 mM KCl, square, or 7 mM KCl, circle, decreased temporally

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