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![A nucleosome is a basic unit of DNA packaging in eukaryotes, consisting of a segment of DNA wound in sequence around eight[1] histone protein cores. [2] This structure is often compared to thread wrapped around a spool. Nucleosomes form the fundamental repeating units of eukaryotic chromatin. Basic structure illustrations](https://thumbs.dreamstime.com/b/nucleosome-basic-unit-dna-packaging-eukaryotes-consisting-segment-dna-wound-sequence-around-eight-histone-49336255.jpg)
