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West Cliff Preston, 2 Bedrooms Flat To Rent. GCSE revision and A level revision. 4College.co.uk- Salters Chemistry- AS and A-Level Chemistry Revision. Chemguide: helping you to understand Chemistry - Main Menu. Chromatography. Dna typing. DNA Forensics. ADVANCING JUSTICE THROUGH DNA TECHNOLOGY: USING DNA TO SOLVE CRIMES. TOC | Executive Summary | Using DNA to Protect the Innocent The past decade has seen great advances in a powerful criminal justice tool: deoxyribonucleic acid, or DNA. DNA can be used to identify criminals with incredible accuracy when biological evidence exists. By the same token, DNA can be used to clear suspects and exonerate persons mistakenly accused or convicted of crimes.