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H2AsO4− influx in the absence of H2PO4− for mine site (▾, dashed line) and heathland (●, solid line) H. ericae. H2AsO4− influx after growth in the presence of 5 mmol−3 H2PO4− for mine site H. ericae (▿, dashed line) and heathland H. ericae (○, solid line). Bars = mean ± se (n = 3).
