Oldest forensic DNA sample obtained

Forensic experts have obtained a DNA profile of the unknown killer of a schoolgirl raped and shot dead 62 years ago near Swansea, Wales. Scientists isolated the killer's DNA from a semen stain on the raincoat of the 12-year-old victim, Muriel Drinkwater, and examined linkurl:short tandem repeats;http://www.the-scientist.com/article/display/13102/ (STRs) on the Y-chromosome. Y-STR haplotypes are often used in linkurl:genealogical testing,;http://www.the-scientist.com/article/display/13524/ and p