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. 2015 Jan 22;15(2):2438–2452. doi: 10.3390/s150202438

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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 3. — (A) Detection of 200 μM adenine on GCE modified by different graphene oxide; (B) Calibration curve of adenine on unmodified GCE and GCE modified by GO-ttc-NAF; repeated in triplicates; (C) Simultaneous detection of guanine (262 μM), adenine (51 μM) and cytosine (273 μM) with uracil (255 μM) by unmodified GCE and GCE modified by GO-ttc-NAF; (D) Optimization of hydrolysis temperature measured by GCE modified with GO-ttc-NAF, concentration of adenine and guanine was 9 μM and 4 μM respectively.