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24 April 2014 11:45 am ,
Vol. 344 ,
Major climate data sets have underestimated the rate of global warming in the last 15 years owing largely to poor data...
The tsetse fly is best known as the vector for the trypanosome parasites that cause sleeping sickness and a disease in...
The National Institutes of Health is revising its "two strikes" rule, which allowed researchers only one chance to...
By stabilizing the components of retromers, molecular complexes that act like recycling bins in cells, a recently...
Fossil fuels power modern society by generating heat, but much of that heat is wasted. Semiconductor devices called...
Researchers are gaining insights into what made Supertyphoon Haiyan so powerful and devastating through post-storm...
Millions around the world got a first-hand look at what it was like to be in Tacloban while it was pummeled by...
- 24 April 2014 11:45 am , Vol. 344 , #6182
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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.