Localization of the deletion in resistant insects into the ABCC2 gene genomic region (A) schematically represented at the genomic region (B) and on the hypothetical protein (C). Sequences were obtained by PCR amplification of the reported region using genomic DNA from the Xen-R and FRA strains. ‘E’ labels are indicative of the predicted exons in the reported region. The dashed line indicates the deletion in the Xen-R insects. PCR, polymerase chain reaction.