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The article reports that the addition of polyadenylic-polyuridylic acid (poly A:U) to adjuvant chemotherapy increases the survival of patients with gastric cancer based on a study conducted in Korea. Patients included in the study received chemotherapy within 6 weeks of resection and comprised of doxorubicin, fluorouracil and polyribonucleotide. The poly A:U group have a survival rates of 68.4% compared to 54.4% of chemotherapy alone group in 5 years and 50.1% versus 38.1% in 15 years. Recurrence-free survival was also higher in the poly A:U group.