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. 2015 Oct 15;6:862. doi: 10.3389/fpls.2015.00862

Scheme 1.

Scheme 1

Working principle of catalytic amperometric biosensor device: schematic illustration shows the working principle of Osmium-horseradish peroxidase (Os-HRP) modified carbon electrode depicting the oxidation-reduction cycle leading to generation of reduction current for H2O2.