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A taxonomic genus within the superfamily Helicoidea — certain land snails.
From Latin helix, from Ancient Greek ἕλιξ (heliks, “something twisted or spiral”).
Latin from Greek wel-2 in Indo-European roots
American Heritage Dictionary of the English Language, 5th Edition
Each wing forms a mobile helix or screw.
The molecule consists of a short triple helix about 105 nm in length with a large globular domain at each end.
Hedera helix, is the only native British evergreen climbing shrub.
These two bonds act to stop the alpha helix forming.
Although the common ivy Hedera helix appears the most frequent, a variety of cultivars and other species are available for horticultural use.
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