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The effect of two concentrations of ZnO NPs; 25 ppm and 50 ppm on the relative proportions of starch, protein and carbohydrates in lettuce seeds. The total of each bar is 100 and the measured concentrations of each of the following components; starch, protein and total carbohydrates are expressed as percentage of the respective totals. Labels inside the rectangle bars represent the measured concentrations (mg/ml) of biomolecules in each seed group.
