• Fruit Fly (Drosophila melanogaster)
  Transcription factor number: 77
  ChIP-Chip/Seq datasets: 183
• Worm (Caenorhabditis elegans)
  Transcription factor number: 106
  ChIP-Chip/Seq datasets: 214
• Human (Homo sapiens)
  Transcription factor number: 151
  ChIP-Chip/Seq datasets: 962
• Mouse (Mus musculus)
  Transcription factor number: 50
  ChIP-Chip/Seq datasets: 168
• Yeast (Saccharomyces cerevisiae)
  Transcription factor number: 201
  ChIP-Chip/Seq datasets: 343