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We have shown that Staphylococcus aureus biofilm production is induced in iron-restricted conditions and is repressed by iron via a Fur-independent mechanism, while Fur has both positive and negative regulatory roles in low iron. Furthermore, there is no significant increase in polymeric N-acetylglucosamine polysaccharide expression to account for induction of biofilms in low iron.
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Johnson et al. (2005) studied this question.
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