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Schematic representation of the tandem sites analyzed in this study. (Boxes) Exons; (dashed lines) splice events; (boldface) the variable exonic parts; (GYNGYN and NAGNAG) tandem sites with a distance of 3 nt; (Δ4–Δ9) tandem donors and acceptors that are 4–9 nt apart, respectively; (N) A, C, G, or T; (Y) C or T.
