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In the united states, many people think of drunk driving when they hear the term breathalyzer, if you are suspected of driving under the influence of alcohol, police will most likely ask you to breed into a breathalyzer, this device identify how much alcohol is in your blood by measuring the amount of alcohol in your breath.
Now researchers are using the same technology to test for something else.  Cancer. This breathalyzer created by outstood medical can identify and measure chemical in a person’s blood. And find this chemical at very low level usually parts per billion. British researcher have ask 1500 people to take part in test of the devices.