Francis Crick and James Watson discover the double-helix structure of DNA.

Twisting birefringent fiber with concentric noncircular cores with 180 rotation symmetry creates double-helix structures.

Moreover, the proposed double-helix structure suggested how all this information could be faithfully replicated and passed from cell to cell and from generation to generation.

At night, the bridge will be illuminated by a series of lights that highlight the double-helix structure, thereby creating a special visual experience for the visitors.

The images provide photographic proof of DNA's double-helix structure, and could further scientific understanding of the compound's function.

Tucked within its double-helix structure, DNA contains the chemical blueprint that guides all the processes that take place within the cell and are essential for life.

The double-helix structure of DNA, to represent the immortal molecule.

It stretches for more than 300 yards and features a curved design of latticed metal in the shape of a "double-helix" structure.

The double-helix structure of the molecule can be seen as a pair of metaphorical spiral staircases: one going down into history, the other up into the future.

A portion of the double-helix structure of deoxyribonucleic acid, or DNA, the chemical stuff of genes.