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. 2015 Feb 12;15(2):4212–4228. doi: 10.3390/s150204212

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Figure 7. — Electrical current responses of two DA sensors for incremental additions of 2.5-μM dopamine to 40 mL of 0.05-M PBS solution. Both sensors had identical gold WEs but with different REs: (red) the planar IrO_x pseudo-RE; and (blue) a standard glass-tube Ag/AgCl RE.