A simple and sensitive immunosensor for the detection of cancer biomarker prostate specific antigen (PSA) has been developed. Around the percolation threshold of the graphene film, the conductivity of the graphene film varies significantly with the surface adsorption of molecules, which can be used for the detection of proteins based on antibody-antigen binding.

Self-assembled Star-shaped Chiroplasmonic Gold Nanoparticles 1 for Ultrasensitive Chiro-immunosensor of Viruses 2 Syed Rahin Ahmed, Éva Nagy, and Suresh Neethirajan 3 BioNano Laboratory, School of Engineering, University of Guelph, Guelph, Ontario, 4 Canada N1G 2W1 5 Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON 6 N1G 2W1 7 Corresponding author: sneeth...

This paper presents an overview of methods for detection and identification of the pathogenic bacterium Francisella tularensis such as cultivation tests, enzyme-linked immunosorbent assays, flow cytometry, polymerase chain reaction, immunosensor, microarray, mass spectrometry, and chromatography. Included references are chosen according to their practical importance or perspectives for the future.

BACKGROUND A reagentless sensor array for simultaneous multianalyte testing (SMAT) may enable accurate diagnosis and be applicable for point-of-care testing. We developed a disposable reagentless immunosensor array for simple immunoassay of panels of tumor markers. METHODS We carried out SMAT with a direct capture format, in which colloidal gold nanoparticles with bound horseradish peroxidase...

In this work, a sensitive dual mode competitive electrochemical immunosensor based on differential pulse voltammetry (DPV) and square wave (SWV) response modes for quantitative determination of dibutyl phthalate (DBP) was successfully established. According to diethylenetriamine (DETA) assisted hydrothermal strategy, novel N-doped graphene/CoSe2 nanobelt composite prepared. Afterwards, PEI func...