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. 2021 Nov 29;9:782268. doi: 10.3389/fcell.2021.782268

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Copyright © 2021 Tian, Wang, Wang, Zhi, Dong, Jiang, Han, Li, Kang, Li and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Genomic compartmentalization of AA and LS chicken breast muscles. (A) The genomic compartment changes between AA and LS chicken genomes from breast muscles. “A” and “B” mean the open and closed compartments, respectively. “A to A” means open compartments in both chickens, “B to B” represents closed compartments in both chickens, “A to B” means the compartments that are open in AA but closed in LS, and “B to A” means the compartments that are closed in AA and open in LS. (B) The percentage of compartments that have switched (A to B or B to A) or been stable (A to A or B to B) between AA and LS chicken breast muscle genomes for chr16 through chr33 (orange) and the rest of the genome (blue). (C–K) First principal component of chr21, chr23, chr26, chr22, chr28, chr24, chr25, chr27 and chr33, respectively. The upward red irregular rectangles represent open A-type compartmentalization and the downward blue irregular rectangles represent closed B-type compartmentalization.