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. 2009 Oct 28;3:141–154. doi: 10.4137/bbi.s3030

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Copyright © 2009 The authors.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/2.0/).

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Figure 4. — Plots of GC3 vs. GC2 in true positives (CDS, panels: A,C,E) and false positives (introns, panels: B,D,F) ORFs ≥ 250 bp after classification by UFM without filters. The sequence samples of H. sapiens (A,B), D. melanogaster (C,D) and A. thaliana (E,F) are the same as those used for Figure 3 and Table 3. The gray areas match ORFs corresponding to GC2 levels larger than the quantity (GC3 + 120)/3 when GC > 60% that are filtered out by filter 1. The gray line that matches y = 7.14 × 241.5 is for the universal correlation.³⁷ The black line y = 3 × 120 matches the left border of the gray zone.