Frog cells give artificial nose the power of super smell

 作者:从辍莼     |      日期:2017-11-26 07:01:00
GENETIC modification of egg cells from frogs has led to the development of a supersensitive artificial nose. Shoji Takeuchi at the University of Tokyo, Japan, says that today’s electronic noses, used to sniff for rotten food in production lines, lack accuracy. Such e-noses contain quartz rods designed to vibrate at a different frequency when they bind to a target substance. But this is not a foolproof system, as subtly different substances with similar molecular weights may bind to the rod, producing a false positive. Instead, Takeuchi believes there is nothing quite as good as biology for distinguishing between different biomolecules,