Venn diagram of the overlap between and among four datasets. Gene datasets are colored according to gene classes (HI genes, HK genes, TiGER genes and SPD genes), and the total gene number is shown beside the dataset name. The unique and shared gene numbers between and among the four gene datasets are shown in the unique and overlapped regions.
Zhou et al. BMC Genomics 2013 14:67 doi:10.1186/1471-2164-14-67