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Binding model of a carbon nanotube (CNT) with a poly(T) DNA sequence. The DNA wraps around the CNT in a right-handed helical structure. The bases (red) orient to stack with the surface of the nanotube, and extend away from the sugar-phosphate backbone (yellow). The DNA wraps to provide a tube within which the CNT can reside, hence converting it into a water-soluble object. Reprinted with permission from ref. 18. Copyright 2003 Nature Publishing Group.
