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Depiction of the fabrication of Wab/APTES-SiNWFET (sample 1) and Fab/APTES-SiNWFET (sample 2) immunosensors in this study. (A) The SiNW channels (light blue bar) were modified with APTES (black short zigzag shapes) and (B) GA (green zigzag shapes) before (C) immobilizing either the Wab (bronze Y shapes in sample 1) or the Fab (yellow-bronze bars in sample 2).
