In another murine cancer model, a DNA vaccine, which consists of the whole LLO sequence fused to the fetal liver kinase 1 (Flk1), a murine homologue of vascular endothelial growth factor receptor 2, was very effective in inducing tumor regression and a robust antitumoral immune response, compared with a DNA vaccine that contains Flk1 alone [54]. This evidence concerns the gene KDR and cancer.