This long polymer folded into a ‘fractal globule’ is extraordinarily dense, but completely unknotted. Experimental evidence indicates that the human genome may fold into fractal globules. This structure keeps genetic information compact, yet highly accessible.
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Journalists wishing to reproduce this image for news stories about related research should include the following image credit: Miriam Huntley (Harvard University), Erez Lieberman Aiden (Harvard University Society of Fellows, Broad Institute Visiting Scientist).