DNA Extraction From Fingerprints
Myriad writes "A Canadian scientist has developed a new way of gathering DNA evidence for analysis using fingerprints. The new test can extract DNA in 15 minutes - even from a print stored for many years and in varying conditions. The patented extraction technique consistently produces ~10 nanograms of DNA. Analysis generally requires 5-10 nanograms, although it is possible with as little as 0.1 nanogram."
partially correct. sweat molecules do not contain DNA...DNA is a seperate molecule. what they're getting the DNA from is the nucleus of any skin cells left behind