http://www.dna.caltech.edu/Papers/DNAorigami-nature.pdf Open-source 3D DNA origami http://blog.makezine.com/archive/2009/07/open-source_3d_dna_origami.html?CMP=OTC-0D6B48984890 2009-07-27 http://makezine.com/images/logos/rss_icon.jpg