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Iron-dependent growth and expression of siderophore in F. tularensis. Growth of Schu S4 (A) and LVS (B) in che-CDM with various levels of FeSO4, measured as the change in the OD. (C) Production of siderophore, expressed as specific CAS activity, in supernatants after 55 h of growth in che-CDM with various levels of FeSO4.
