Polymorphism in the interleukin-17A promoter contributes to gastric cancer

Figure 1 Interleukin-17 genotyping. A representative image of the results of an interleukin-17 (IL-17) genotyping assay is shown. The IL-17 promoters were amplified by polymerase chain reaction and the resulting products were digested with XagI. Products were then separated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The IL-17 GG genotype was evident as 153 and 109 bp fragments, GA as 262, 153 and 109 bp fragments, and AA as a single 262 bp fragment.