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. 2020 Feb;30(2):173–184. doi: 10.1101/gr.253674.119

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© 2020 Li et al.; Published by Cold Spring Harbor Laboratory Press

This article is distributed exclusively by Cold Spring Harbor Laboratory Press for the first six months after the full-issue publication date (see http://genome.cshlp.org/site/misc/terms.xhtml). After six months, it is available under a Creative Commons License (Attribution-NonCommercial 4.0 International), as described at http://creativecommons.org/licenses/by-nc/4.0/.

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Figure 5. — Schematic representation of 24-nt siRNAs and CHH methylation in different tissues. Gray segments represent euchromatic DNA and colored segments represent heterochromatic DNA, the same region in each tissue. Tissue-specific 24-nt siRNAs are abundant in either sperm cell, egg cell, or seedling leaf (tissue-specific loci), while shared 24-nt siRNAs are abundant in all three (intersection loci).