But Los Angeles Police Criminalist Susan Brockbank said "the point of doing a hair comparision is looking at a known sample to get a "range of characteristics... and then comparing that questioned hair to it.

CNN: June transcripts arranged by date.

"Once the result of the A sample is known it is a statement of fact until proved otherwise, " CGF chairman Mike Fennell said.

BBC: Organisers talk tough on drugs

Floyd Landis' B sample test result should be known this weekend.

NPR: Landis Facing Uphill Battle on Doping Charges

However, they warn that although they studied about half of all the people known to have contracted vCJD, their sample is still too small to be conclusive.

BBC: 'Missing gene increases CJD risk'

It found that 26% of the sample had Tinea pedis, better known as athlete's foot, while 30% had Onchomycosis, an infection that causes toenails to become thickened, discoloured and distorted.

ECONOMIST: Fancy footwork

She first injects a sample of "wild virus"-- in this case, H1N1 virus she got from the CDC, originally culled from a child who was infected in California this spring -- and then injects a sample of another flu strain that's known for its ability to rapidly multiply in eggs.

CNN: Candidate virus for H1N1 vaccine arrives at CDC

Faced with the problem that DNA gathered at the scene did not match any sample in the national DNA database, they tried what is known as "ancestral DNA profiling".

BBC: Night Stalker case: Delroy Grant's reign of terror ends