DNA robots work in a live cockroach
nature.com
nature.com
http://www.newscientist.com/article/dn25376-dna-nanobots-del...
http://www.nature.com/nnano/journal/vaop/ncurrent/full/nnano...
Edit: I wasn't sure whether or not to put the Nature article (original source, but closed to many) as the URL or the New Scientist article (Open, but lower quality). No complaints from me if a mod decides to change it up. Here's the original link for context:
http://www.nature.com/nature/journal/v508/n7495/full/508153e...