Fig. 5From: Graphene quantum dot nanocomposites: electroanalytical and optical sensor technology perspective(Reproduced with permission from Ref. Mollarasouli et al. 2018, Copyright 2018, Elsevier)Schematic of the different steps in constructing a label-free immunosensor for AXL, which involves amine-functionalized GQDs-modified screen-printed carbon electrodes and covalent immobilization of anti-AXL through oxidized sugar chainsBack to article page