Detailed text transcripts for TV channel - CNN - 20110214:18:48:00
Often. but after you think of cotton, for example, you probably can't get a very good finger print but can get a mark indicating that a hand has been at that particular point on the fabric. >> you know, we hear about dna testing, of course, all the time. it's all the rage in all criminal investigation programs on television. how important are fingerprints, really, in investigations? >> well, they're really pretty important for, how shall i say, smooth surfaces. can i go back to your dna point, because the main thing that we feel is the biggest breakthrough from crime scene investigators point ...
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