Last seen in:
- USA Today - Apr 4 2015
- Premier Sunday - King Feature Syndicate - Feb 8 2015
- USA Today - Nov 7 2012
- Universal - Mar 18 2010
- Boston Globe - Sep 21 2008
- New York Times - Sep 19 2007
- Premier Sunday - King Feature Syndicate - Oct 1 2006
- Premier Sunday - King Feature Syndicate - Nov 28 2004
- Universal - Sep 11 2003
- Universal - Jan 30 2003
Related Clues:
- Geneticist's letters
- Biochemist's concern
- 'CSI' concern
- CSI identifier
- Geneticist's concern
- Initials linked to Watson and Crick
- Protein production aid
- Highly reliable evidence
- Life's building block
- Genetic messenger letters
- Transmitter of genetic information
- "CSI" proof
- Stranded matter
- Biotech material
- Cloning need