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. Author manuscript; available in PMC: 2015 Aug 26.
Published in final edited form as: Biosens Bioelectron. 2015 Jan 10;68:508–515. doi: 10.1016/j.bios.2015.01.022

Scheme 1.

Scheme 1

Schematic of (A) fabrication of the immunosensor and (B) reaction occurring at the working electrode surface in 1 × PBS solution at pH 7.4 containing 1 mM[Fe(CN)6]3−, 0.1 M KCl, and 100 μM EDTA at scan rate 50 mV s−1.