Oligonucleotide probes encompassing the NF-κB binding site of the human IL-17 promoter (5'-ATG ACC TGG AAA TAC CCA AAA TTC-3') were generated by 5'-end labeling of the sense strand with [γ-32P]dATP (Amersham Pharmacia) and T4 polynucleotide kinase (TaKaRa).