Species in FASTA files: Ce1 = Caenorhabditis elegans (free-living nematode) Cbr = Caenorhabditis briggsae (free-living nematode) Cbn = Caenorhabditis brenneri (free-living nematode) Cja = Caenorhabditis japonica (free-living nematode) Ppa = Pristionchus pacificus (free-living nematode) Oos = Ostertagia ostertagia (parasitic nematode) Bma = Brugia malayi (parasitic nematode) Dme = Drosophila melanogaster (fruit fly) Spu = Strongylocentratus purpuratus (purple sea urchin) Cin = Ciona instestinalis (non-vertebrate chordate, tunicate) Dre = Danio rerio (zebrafish) Xla = Xenopus laevis (South African clawed frog) Hsa = Homo sapiens (human) Nve = Nematostella vectensis (cnidarian) Tad = Trichoplax adhaerens (basal metazoan - placozoan)