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In the fingerprint analysis a solvent is not enough to recognize compounds at fairly high concentrations.
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Ramsey's family was thought to be guilty for having murdered JonBenet.
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Either new techniques or the existing ones are supposed to be used to help progress in forensics.
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A person can easily be identified if she/he has ever used cocaine, explosive or other materials.
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Scientists have now achieved another breakthrough as far as fingerprints are concerned.