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Functional expression of LjNPF8.6 in X. laevis oocytes in low (0.5 mm) and high (30 mm) external nitrate concentrations. Nitrate uptake is shown in control oocytes (black bars), injected with cRNAs, expressing LjNPF8.6 (white bars) or AtNPF6.3 (gray bars; n = 5–8). Values are means ± se.
