A representation of the circular mt genomes of Ancylostoma caninum (13717 bp) and Bunostomum phlebotomum (13790 bp) (GenBank accession numbers FJ483518and FJ483517, respectively). All 12 protein-coding genes and the large and small ribosomal RNA genes are indicated. Each tRNA gene is identified by its single letter amino acid code, according to the international union of pure and applied chemistry (IUPAC) code. The two leucine and the two serine tRNA genes are differentiated by their respective anti-codons (in brackets). The direction of transcription is indicated by an arrow. The circular map has been drawn approximately to scale; "K" indicates sequence length in 'thousands of base pairs' from the first nucleotide position of the cytochrome c oxidase subunit 1 (cox1) gene.