Chinese scientists are monitoring the polymerase chain reaction(PCR),a process used by molecular biologists and forensic scientists across the world,using a new approach to DNA detection.DNA sensors have many applications,including in disease diagnosis and environmental monitoring.The aim of the team led by Kui Jiao,at the Qingdao University of Science and Technology,was to develop a device for detecting genetically modified organisms.Their device combines an electrochemical sensor with PCR,a method which amplifies target DNA sequences by repeated copying.
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