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. Author manuscript; available in PMC: 2014 Dec 15.
Published in final edited form as: Analyst. 2014 May 7;139(12):3160–3166. doi: 10.1039/c4an00506f

Figure 6.

Figure 6

Oxidation current versus the diamond microelectrode-mucosa spacing. The measurements were made by continuous amperometry in the mouse ileum at 0.8 V vs. Ag/AgCl. The tissue was mounted in a bath with perfusing Krebs buffer (pH 7.4). Approach curves were recorded from 2000 to 10 μm for a clean electrode, after the electrode was deactivated and after reactivation by galvanostatic pretreatment. Error bars represent standard deviations for three approach curves measured for each electrode in the same tissue.