The majority of viruses have capsids with either helical or icosahedral structure.

Wilkins feared, the data suggesting a helical structure might just be an artifact.

The liquid crystal molecules do not form a helical structure and instead are also parallel to each other.

Together, they characterize the helical structure of the molecule.

The cells in double-strand helical structures also twist as they grow.

Translation of the focused laser beam allows to produce even complex helical structures.

X-ray crystallography studies show that the amorphous form may have a helical structure with eight atoms per turn.

There are several lower-resolution methods for assigning general helical structure.

It is certainly true that helical structures known to assemble in this way almost invariably possess only one hand.

The length of the polypeptide was found to be 24 residues with a secondary structure 29% helical.