CNN Forensic Files August 23, 2015 07:21:00
The forensic scientist turned the mask inside out and swabbed around the mouth area, hoping to pick up cells from saliva. >> using the entire surface area of the swab to collect as much of the potential cellular material thats there. >> using a dna test called str, or short tandem repeats, scientists found dna from three different individuals inside the mask, but investigators needed to know who was wearing the mask before it was discarded. to find out, they analyzed the swab from the ski mask t...
Source: archive.org