DNA Geometry.

http://images.google.com/imgres?imgurl=http://www.curtisdna.com/dna/img9.gif&imgrefurl=http://www.curtisdna.com/dna/&h=471&w=281&sz=57&tbnid=spbe8BPc29gJ:&tbnh=124&tbnw=74&start=21&prev=/images%3Fq%3Dtopological%2Bgeometry%26start%3D20%26hl%3Den%26lr%3D%26ie%3DUTF-8%26sa%3DN




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It has potential for architectural applications to tower forms.

.H.
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