Figure 4.
Microprobe with two DA sensing sites and two control sites was tested with steps in concentration of AA (250 μM, 500 μM, 750 μM), DA (5 μM, 10 μM), and H2O2 (10 μM, 20 μM) in 50 mM PBS, pH 7.4, at 0.7 V (vs. Ag/AgCl).
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