Related Clues:

• Highly reliable evidence
• Life's building block
• It's often broken
• Something to practice
• "CSI" proof
• Biotech material
• Cloning need
• '-- and Order'
• It has a long arm?
• Forensic material
• Judge's study
• Forensic ID
• "The Paper Chase" subject
• DA's interest
• Something 'on the books'