Date: 29.11.2013
Arizona State University scientists have developed a microfluidic chip, which can sort good germs from bad.
Your intestines are home to about 100 trillion bacteria. That's more than the number of cells that comprise the entire human body. Armies of bacteria sneak into our bodies the moment we are born, uninvited but necessary guests.
For the most part, these bacteria are industrious and friendly. Some of them are even beneficial, helping with digestion and producing vitamins. A few miscreants, though, will kill us if we let them stay.
Sometimes the difference between harmless and harmful is miniscule. Take E. coli for instance. Billions of E. coli organisms live in the average person's intestines. They go about their business causing no trouble whatsoever. However, one particular strain of E. coli, O157:H7, causes about 2,000 hospitalizations and 60 deaths in the U.S. every year. The differences between this strain and others are detectable only at the molecular level.
Scientists at Arizona State University's Department of Chemistry and Biochemistry, in the College of Liberal Arts and Sciences, have developed a new device that could significantly speed up the identification process for harmful bacteria and other microorganisms. The team, led by Professor Mark A. Hayes, hopes to create handheld, battery-operated devices that could deliver answers in minutes, instead of days.
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