Bounty's Blog

Hand bacteria could be used to solve crimes

06:04, 1969-Dec-31 .. 0 comments .. Link

Hand bacteria could be used to solve crimes Hand bacteria could be used to solve crimes Police routinely use fingerprints and DNA to link criminals and victims to a crime scene.#x Now researchers at the University of Colorado believe they may have found another way.

They've used bacterial DNA found on computer keyboards to identify who has been using them. PVC Tarpaulin

Timothy McDonald reports.

TIMOTHY MCDONALD: No matter how often we wash our hands or how hard we scrub, humans are anything but sterile.

Associate professor Noah Fierer says that's not such a bad thing.

NOAH FIERER: We're just coated with these bacteria, right, but it is not worth being worried about. Most of these are completely harmless and some of them actually are beneficial, protecting us from other pathogens.

TIMOTHY MCDONALD: Noah Fierer says each person has their own unique cocktail of bacteria.

NOAH FIERER: Any two people only share about 13 per cent of their bacterial species in common so these are diverse communities and they seem to be very unique to each person but the question is why and we don't know the answer to that right now.

TIMOTHY MCDONALD: Whatever the reason,#x it's clear that the bacteria are not just unique,google排名, but are remarkably durable. And what's more, PVC Tarpaulineverybody leaves them behind.

The same can't be said for fingerprints, which can be smudged, or for DNA, which is often difficult to obtain in large enough quantities to be useful for identification.

Noah Fierer says that makes bacteria potentially very useful for figuring out who's been where.

NOAH FIERER: The bacteria on your hand today will look pretty much like the bacteria on your hand four months from now so once we knew that we are like okay well this is pretty neat so let's see if we can look at the bacteria left on surfaces that we touch and use that information to tell us who was likely to have touched that object because we know that we essentially leave a stream of hand bacteria on objects that we touch as we go about sort of our daily business.#x

So essentially these series of studies where essentially a proof of concept to seePVC Tarpaulin if we could look at these bacterial communities on objects and match them up to the individual that touched the object - as simple as that. 相关的主题文章：