期刊
LAB ON A CHIP
卷 11, 期 4, 页码 658-663出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0lc00409j
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资金
- Italian Institute of Technology (IIT)
- MIUR [BNE03FMCJ_003]
A flow-injection impedimetric immunosensor for the sensitive, direct and label-free detection of cholera toxin is reported. Alimit of detection smaller than 10 pM was achieved, a value thousands of times lower than the lethal dose. The developed chips fulfil the requirement of low cost and quick reply of the assay and are expected to enable field screening, prompt diagnosis and medical intervention without the need of specialized personnel and expensive equipment, a perspective of special relevance for use in developing countries. Since the chip layout includes two sensing areas each one with a 2 x 2 sensor array, our biochips can allow statistical or (alternatively) multiplex analysis of biorecognition events between antibodies immobilized on each working electrode and different antigens flowing into the chamber.
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