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 ?
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 technique is expected to be of utility in trace DNA analysis of forensic samples and in the detection of a single virus or bacterium in clinical diagnostics applications.
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.
SEQUENOM's ability to perform trace DNA analysis has enabled us to analyze circulating fetal DNA, a goal that on a large scale has been difficult in the past using other techniques due to their dependence on the fractional concentration of the circulating DNA and their lack of sensitivity.
Existing FDA protocols for gene therapy clinical trials required the pause, and subsequent testing confirmed the trace DNA cleared the patient's body.