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Fig. 5 | BioMedical Engineering OnLine

Fig. 5

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

Fig. 5

Relative fluorescence intensity response was measured as a function of potassium concentration. The relative fluorescence intensity was independently normalized with respect to the fluorescence signal of the corresponding DNA nanosensor concentration in the presence of the control buffer (PB + MgCl2), without K+. To optimize the concentration of DNA sensors, K+ was added at concentrations of 0, 1, 10, and 25 mM to DNA nanosensor samples of various concentrations: 0 µM (black square), 1 µM (figure dash), 5 µM (black diamond), 10 µM (black up-pointing triangle), 16.6 µM (gray circle), and 33.3 µM (black circle)

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