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. 2023 Apr 3;55(4):755–766. doi: 10.1038/s12276-023-00981-7

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© The Author(s) 2023

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Fig. 2 — Seven main types of alternative splicing events are depicted. Exons are represented by boxes, and introns are represented by lines. Constitutive exons are green, and alternatively spliced exons are pink and orange. Bent lines indicate an alternative splicing event. Promoters (P) are indicated with arrows and polyadenylation sites with AAAAA. Exon skipping (a), alternative 5’ss (b), alternative 3’ss (c), intron retention (d), mutually exclusive exons (e), alternative promoter (f), and alternative polyadenylation (g) are shown.