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. 2020 Mar 5;21(Suppl 1):749. doi: 10.1186/s12864-019-6154-7

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© The Author(s) 2020

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License(http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — a Three exons with the back-splicing signal (AG-GT/AC-CT) are chosen. b The k-mers from the beginning part and ending part of exon 1 and exon 3 are collected, while all k-mers from exon 2 are selected since Len_exon2<2×L_seq. c The graph is constructed by these collected k-mers: exon 1/exon 3 are represented by 2 separate green/blue paths in the graph, and exon 2 is represented by one red path