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Potato transformation frequencies (transformed shoots explant−1) × 100% for Agrobacterium strains containing pSIM269 and pSIM401, respectively. After cocultivation, explants were placed on medium containing kanamycin (kan). After 20 d, one group of explants infected with Agrobacterium:pSIM269 was transferred to 5FC (Kan-5FC). Data represent the average ± se of three experiments.
