Detection of a fraud attempt in sample taking for a DNA analysis is modifying forensic scientists' action protocol: It will be compulsory for the donor to wash his mouth out before a witness.
The fraud attempt took place in a paternity test, when the donor mixed his own saliva with that of someone else's.
Faced with the evidence, the suspect admitted that, shortly before the sample taking, he put someone else's saliva into his mouth from a little container.
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