trace DNA

trace DNA

A minimalist amount of DNA which can be used to confirm skin contact (“mere touch”) with a surface by a specific person; trace DNA has resulted in successful DNA profiles from an array of sources including shoe laces, chocolate bars, door bells, urine in snow, etc.
References in periodicals archive ?
Using a wet vacuum collection system called the M-Vac, forensic analysts pulled enough microscopic trace DNA to paint a full genetic portrait of the murderer.
Contract awarded for Supply Of Forensic Sampling Kits and Consumables, Lifting Tape for Trace DNA Collection & Sterile Flocked Swabs with Self Drying System
Before the familial search, efforts to trace DNA found at the crime scenes had been unsuccessful.
Forensic scientists explain some ways that trace DNA evidence can be made more reliable than at present.
The real-life Cracker, who has exchanged hundreds of letters with the murderer, also believes trace DNA evidence found in the prime suspect's car could finally help solve the 24-year mystery.
The "spit kits" will help officers trace DNA and crossmatch it with their national database.
On the first anniversary of Mr Sharpe's death, Detective Superintendent Harry Stephenson, in charge of the inquiry, said: "We are liaising with forces from all over the country in a bid to trace DNA found on a cigarette end in Mr Sharpe's home.
Forensic scientists at the DNA lab use chemistry and physics to extract trace DNA from the crime scene evidence, and they then employ the same chemical methods to isolate, multiply and measure DNA strands at the same 13 regions of the chromosome.
As Gemma, said: "Its DNA identification system will trace DNA on a bit of litter so they can track down the offender.