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In May 8, xinhuanet.com Washington (reporter Zhang Zhongxia Temple) the United States University researchers recently using genetic engineering techniques to develop a biosensor, once found explosives, the sensor will emit green fluorescence.
Researchers at Temple University School of Medicine report magazine in the 6 issue of "natural chemical biology" that they use genetic engineering technology, first introduced the system of the mammalian olfactory signal of a yeast strain, and then connect the olfactory signal system and green fluorescent protein expression.
In the specific operation, the researchers selected the mouse as the experimental object, and cloned a single olfactory receptor into the yeast cells. When the olfactory receptor "sniffing" to the TNT explosive, yeast as a biosensor will emit green fluorescence.
The research team said that the future of this biosensor can also be used to detect landmines and sarin gas and other deadly substances. They believe that the mammalian olfactory system has a huge potential to identify many chemicals and has high sensitivity and can be used to detect toxic chemicals.
The next step will be to optimize the sensor design, such as shortening the response time
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