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Hand Bacteria
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Forensic scientists could identify suspects from bacteria - Tele
CSIs may one day be able to use more than DNA and fingerprints to catch criminals, as a new study finds that the bacteria that live on our hands are just as unique to each of us as our DNA. And traces of this "personal" DNA left behind on the surfaces we touch can be matched to the person who left it. The human body — inside and out — plays host to billions of bacteria and other microbes; there are more bacteria in the human body than there are human body cells. Previous research by Noah Fierer of the University of Colorado at Boulder and his colleagues had found that a typical human hand carries about 150 bacterial species and that only about 13 percent of the bacterial species found on any one hand are shared between two people. "The obvious question then was whether we could identify objects that have been touched by particular individuals," Fierer said. Hand Bacteria Left On Surfaces Could be Forensic Tool | LiveScie Hand Bacteria Left On Surfaces Could be Forensic Tool | LiveScie
CSI's Latest Clue—Bacteria CSI's Latest Clue—Bacteria Criminals already have to be careful not to leave fingerprints or DNA that could incriminate them. But they might want to carry hand sanitizer, too, according to a new study that suggests a new way to finger perpetrators from their skin bacteria. The human body hosts hundreds of bacterial species that perform various salubrious housekeeping chores, from aiding digestion to helping the immune system identify foreign invaders.
Articles by constance holden
Constance Holden portraits in oils Constance Holden portraits in oils I am an artist, musician, and science journalist based in Washington, D.C. My main interest is portraiture, of people and animals. I do most of my commissions using photographs I take of the subject, but if you live in my area, some sittings are also advised. I also copy photographs that people send me. Prices range from $250 (a small animal portrait) to $3000 (a big family).
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