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Any quinolone antibiotic with a fluorine (F) atom attached to the quinolone structure, with broad-spectrum antibacterial activity. Fluoroquinolones diffuse through the bacterial cell wall and act by inhibiting bacterial topoisomerase II, DNA gyrase and/or bacterial topoisomerase IV, which are enzymes involved in bacterial DNA replication. This prevents DNA replication and leads to a blockage of bacterial cell proliferation.
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