【英语时差8,16】青霉素的历史2

（单词翻译）

 In 1928, Alexander Fleming was studying the bacterium¹, Staphylococcus, when some of the bacteria became contaminated with Penicillium fungus² and stopped growing. Fleming decided³ that some chemical produced by the Penicillium fungus must be stopping the growth of the Staphylococcus bacteria. Fleming isolated⁵ that chemical and called it “penicillin⁶.” Fleming’s own attempts to treat patients with penicillin were not very successful, but during the next few decades, scientists were able to isolate⁴ purer doses of penicillin and the new drug turned out to be one of the most significant medical advances of the twentieth century. Since antibiotics⁷ kill living cells, one of the problems is finding antibiotics that will kill bacteria cells without killing⁸ the patient’s own cells. But that’s our topic for next time.