Fingerprint test can distinguish between those who have taken or handled heroin
A state-of-the-art fingerprint detection technology can identify traces of heroin on human skin, even after someone has washed their hands -- and it is also smart enough to tell whether an individual has used the drug or shaken hands with someone who has handled it.
from Latest Science News -- ScienceDaily https://ift.tt/2pUahVE
from Latest Science News -- ScienceDaily https://ift.tt/2pUahVE
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