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6 March 2014 1:04 pm ,
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Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: A Vase Made From DNA
14 April 2011 2:00 pm
Scientists have fashioned perhaps the most elaborate piece of DNA origami yet: a tiny three-dimensional vase just 70 nanometers tall. For 5 years, researchers have been able to create nanostructures out of DNA, but until now most of the shapes have been fairly boring, like boxes or polygons, because they needed to be folded around a grid of DNA pegs or "pixels." In their paper published online today in Science, researchers describe a new origami technique, in which they begin by forming rings of different radii with DNA strands. They stack these rings on top of one another to form the basic 3D shape, and then insert "crossover points" to blend the DNA strands into adjacent rings, holding the structure together. They hope that their vase, pictured above in an atomic force microscope image and a computer-generated image, could be used in medicine to deliver drugs or enzymes to specific parts of the body.
See more ScienceShots.