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A monosodium glutamate (MSG) biosensor made by co-immobilized l -glutamate oxidase ( l -GLOD) and l -glutamate dehydrogenase ( l -GLDH) as the bio-component based on substrate recycling for highly sensitive MSG or l -glutamate determination, has been developed. Regeneration of MSG by substrate...
This article presents a new technique to fabricate patterns of functional molecules surrounded by a coating of the inert poly(ethylene glycol) (PEG) on glass slides for applications in protein microarray technology. The chief advantages of this technique are that it is based entirely on standard...
A portable heterogeneous immunoassay system is presented in this paper. It consists of a poly(dimethylsiloxane) (PDMS) based microfluidic chip as the immunoreactor, a miniaturized programmable high voltage sequencer as the power supply and the flow controller, and a laser-optical fiber...
We have microfabricated a flow-through biochip for the analysis of single base mutations in genomic DNA using two different materials: (1) a polycarbonate (PC) chip for performing a primary polymerase chain reaction (PCR) followed by an allele-specific ligation detection reaction (LDR) and (2) a...
This paper presents the development of a microsystem for separating suspended breast cancer cells in peripheral blood and for sorting them based on their electrophysiological characteristics. A continuous paramagnetic capture mode (PMC) magnetophoretic microseparator was utilized for the...
An original setup for analysis of glycated haemoglobin (HbA 1c ) in blood is reported. The construction employed a combination of the piezoelectric biosensor for glycated haemoglobin and the flow-through photometric sensor for total haemoglobin (Hb). The modification of gold electrodes with...
Piezoelectric sensing is here applied to point mutation detection in human DNA. The mutation investigated is in the TP53 gene, which results inactivated in most cancer types. TP53 gene maps on chromosome 17 (17p13.1). It contains 11 exons and codifies for the relative protein, involved in cell...
A one-step precipitation polymerization procedure for the synthesis of molecularly imprinted polymers selective for 17β-estradiol yielding imprinted micro and nanospheres was developed in this study and compared to templated materials obtained by conventional bulk polymerization. The polymer...
Post-PCR fragment analysis was conducted using our single photon detection-based DNA sequencing instrument in order to substantially enhance the detection of nucleic biomarkers. Telomerase Repeat Amplification Protocol assay was used as a model for real-time PCR-based amplification and detection...
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