In biology, the nuclear matrix is the network of fibers found throughout the inside of a cell nucleus. The exact function of this matrix is still disputed.See There is evidence that the nuclear matrix is involved in regulation of gene expression in Arabidopsis thaliana. See, for example [http://compbiol.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pcbi.0020021.

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