The Soham trial is hearing prosecution evidence at the Old Bailey.
Maxine Carr and Ian Huntley are on trial at the Old Bailey
Dr Helen Davey, a forensic scientist who examined charred remnants of clothing found in a bin on 17 August 2002, was among those giving evidence.
Ian Huntley denies murdering Holly Wells and Jessica Chapman.
His former girlfriend, Maxine Carr, denies two charges of assisting an offender and one of conspiring to pervert the course of justice.
The key details from witnesses on Day 13 are as follows:
Mr Huntley cut off the girls' clothing as their bodies lay in a remote ditch, his lawyer, Stephen Coward QC, said.
Mr Huntley then took the clothes back to Soham Village College, where he worked as the caretaker, and set them on fire, the Old Bailey murder trial heard.
Dr Davey, from the Forensic Science Laboratory based in Huntingdon, Cambridgeshire, said none of the clothing had yielded a DNA profile.
Neither had any of it tested positive for semen.
However, chemical tests had suggested there could have been minute traces of blood on one of Holly's Nike trainers and saliva on Jessica's football shirt, she said.
Scene-of-crime officer Susan Blackmore said a number of "blood spatters" had been found inside 5 College Close, where Mr Huntley lived.
Another forensic expert, Roger Blackmore, said the girls' clothes had been burned inside the bin where they were found.
Forensic scientist Peter Lamb told the court he had been present at the ditch, near Lakenheath, when the two bodies were still there.
He said he believed that some of the girls' clothing - the tracksuit bottoms at least - had been cut off while they were in the ditch.
The expert said he could match one piece of fabric found at the site to "perfectly physically fit" the remains of the tracksuit bottoms of Jessica Chapman found in the bin at the Soham college.
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