<qa>  What is the name of the study population?4. Study population Our study population consists of melanoma patients, with expression of melanoma associated tumor antigens gp100 and tyrosinase. Melanoma patients with regional lymph node metastasis in whom a radical lymph node dissection is performed within 2 months of inclusion in this study further referred to as stage III and melanoma patients with measurable distant metastases further referred to as stage IV will be included. 