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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.
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).