http://web.mit.edu/newsoffice/2009/3d-genome.html
Scientists have long known that DNA is arranged in a double helix. But if the double helix did not fold further, each cell's genome would be two meters long far too large to fit into the nucleus of a human cell, which is about a hundredth of a millimeter in diameter.
A new dimension for genome studies
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A new dimension for genome studies
"Invisible Pink Unicorns are beings of great spiritual power. We know this because they are capable of being invisible and pink at the same time. Like all religions, the Faith of the Invisible Pink Unicorns is based upon both logic and faith. We have faith that they are pink; we logically know that they are invisible because we can't see them."