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Spacing of S/MARs along human chromosome 16. The binned distance between S/MARs on human chromosome 16 is shown for nuclear scaffolds/matrices isolated by LIS or NaCl extraction with the peak distance averages for each indicated. The frequency of both SAR and MAR spacing shows a bimodal distribution with two groups of average inferred loop sizes at 558 bp and ∼88 kb for SARs and 762 bp and ∼94 kb for MARs.
