Figure 4From: A disposable biosensor based on immobilization of laccase with silica spheres on the MWCNTs-doped screen-printed electrodeRelative current responses of the Lac/Si/MWCNTs/SPE at different pH values, containing of 60 μM DA. The cathodic currents are expressed as the percentage of the maximum response obtained at pH = 5.0.Back to article page