抗菌素耐药性使卫生保健费用增加。
有人推测，神经末梢乙酰胆碱释放减少，使由于这些抗菌素和镁制剂，都能和钙竞争进入通道。
It is postulated that the decreased release of acetylcholine from the nerve terminal reflects a competition of the antibiotic or magnesium with calcium for entry into the terminal.
目的合成喹诺酮类抗菌药中间体四氟邻苯二甲酸，并改进工艺，使之适用于工业化生产。
Objective To improve the synthesis of tetrafluorophthalic acid as an intermediate in preparing quinolone antibacterials.
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