The living ABC: Scientists create tiny alphabet out of DNA | Mail Online: "DNA - the building blocks of life - has been turned into literal building blocks, like very, very small Lego, creating an alphabet where each letter is 1,000th the thickness of a human hair.
Researchers at Harvard have come up with a method for building tiny structures out of synethetic DNA strands, which are programmed to assemble themselves into the alphabet.
But this isn't just scientists showing off - the method could be used to create tiny organic 'machines' that swim inside the human body to deliver drugs directly to diseased areas."
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