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Expression of the swolenin gene (A) and β-actin reference gene (B) in the roots of tomato variety Narvik (1, 2) and Gružanski zlatni (3, 4). B refers to blank and M referes to the 100 bp DNA Ladder H3 RTU 50 μg/500 μL (A) and 50 bp DNA Ladder MWD50 50 μg/500 μL (B).
