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Differences in QA reoxidation kinetics of veins (bundle sheath cells) and regular mesophyll cells in response to zinc deficiency stress in soybean leaves (20-nm residue from chemicals and water) compared to control (340-nm Zn) for six weeks. Three areas of mesophyll and three veins were chosen from every leaf for quantification. Values represent means ± se from n ≥ 6 leaves per treatment.
