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A group of broad-spectrum antibiotics related to nalidixic acid that act by inhibiting DNA gyrase and topoisomerase. They can be divided into two groups, based on antimicrobial spectrum and pharmacology: the older group includes ciprofloxacin, norfloxacin, and ofloxacin, and the newer group gatifloxacin, gemifloxacin, levofloxacin, moxifloxacin, and trovafloxacin.

Subjects: Medicine and Health.

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