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Pluripotent Stem Cells Actively Regulate The Openness of their Heterochromatin

Packaging DNA into a small area like the nucleus of the cell does not occur unless that DNA is tightly wound into compact structures collectively known as chromatin. However, not all regions of the genome show the same degree of compaction. Highly-expressed regions of the genome tend to be less highly compacted and regions of the genes that are not expressed to any degree tend to be squirreled…