Schematic representation of the gene and cDNA structures of Culex quinquefasciatus nos and osk genes. Arabic-numbered exons (Ex) are indicated as colored boxes. Exon length in nucleotides appears above each box. Roman-enumerated introns (In) are represented by lines with lengths in nucleotides listed above. Below each gene schematic is a representation of the cDNA product (Cxqu nos; Cxqu osk). The 5′-UTR, ORF and 3′-UTR of each cDNA structure are indicated by colored boxes with the corresponding nucleotide length listed above each. Abbreviations: Ex, exon; In, intron; ORF, open reading frame; UTR, untranslated region. GenBank accession numbers: Cx. quinquefasciatus nos gene, EU517696; Cx. quinquefasciatus osk gene, EU517695.