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(Top panel) Competitive binding assays of bacterial siderophores determined by measurement of displacement of DAUDA (4 μM) from TL (5 μM) by increasing concentrations of aerobactin (♦), enterobactin (▪), and desferrioxamine B (▴). (Bottom panel) Competitive binding assays of fungal siderophores determined by measurement of displacement of DAUDA (4 μM) from TL (5 μM) by increasing concentrations of ferricrocin (♦), ferrichrome (○), rhodotorulic acid (*), coprogen (▴), and TAFC (▪).
