Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, 14195 Berlin, Ihnestr, 63-73, Germany. kamburov@molgen.mpg.de|Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, 14195 Berlin, Ihnestr, 63-73, Germany. kamburov@molgen.mpg.de|Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, 14195 Berlin, Ihnestr, 63-73, Germany. kamburov@molgen.mpg.de|Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, 14195 Berlin, Ihnestr, 63-73, Germany. kamburov@molgen.mpg.de