title: Femtomolar detection of a cancer biomarker protein in serum with ultralow background current by anodic stripping voltammetry.
abstract: An electrochemical immunosensor for the detection of a cancer biomarker protein in serum at femtomolar concentrations with ultralow background response has been developed, which consists of (i) a hydrophilic polyacrylic acid brush-modified indium tin oxide substrate as an antifouling substrate and (ii) a graphene-quantum dots-antibody 'bionanoconjugate' as a signal amplification label in voltammetric detection of targets in a glassy carbon electrode.
authors.affiliation: Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane, QLD 4072, Australia.
authors.forename: Muhammad J A
authors.initials: MJ
authors.lastname: Shiddiky
authors.forename: Prakash H
authors.initials: PH
authors.lastname: Kithva
authors.forename: Sakandar
authors.initials: S
authors.lastname: Rauf
authors.forename: Matt
authors.initials: M
authors.lastname: Trau