Venn diagram of exons and genes. Area-proportional Venn diagram of three sets of exons (top) and three sets of genes (bottom) for chromosome 22. 'Annotation' refers to the set of 387 genes compiled by the Sanger Institute. Examples: 2271 exons were in the Sanger Center annotation and were exactly predicted by AUGUSTUS+ using the Combined hints and by SGP2. The annotation set and the set of predictions of AUGUSTUS+ shared 71 genes identically, that were not in the set of SGP2 predictions.