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Impact of catecholamines and catecholamine receptor antagonists on siderophore production by V. harveyi. The concentration of catecholamines used is 50 μM. Phentolamine and chlorpromazine was added at a concentration of 100 and 10 μM, respectively. The error bars indicate the SD of six replicate cultures. Different letters indicate significant differences (One way ANOVA with Tukey’s post hoc test; p < 0.01).
