Joined: 18 May 99
Fresh twist to the DNA story signals major cancer breakthrough
The DNA double helix has been an icon of science ever since it was first described by Francis Crick and James Watson in 1953.
Joined: 17 May 99
'Quadruple helix' DNA seen in human cells
Cambridge University scientists say they have seen four-stranded DNA at work in human cells for the first time.
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