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1989年夏天,当弗莱明把实验室收拾好,准备好好地享受一次悠闲的假期时,他绝对不会想到,被他大意地遗忘在无菌培养箱外的一个培养皿将会给人类带来什么。这种培养皿不过手掌心大小,添加了琼脂的营养液就像一块无色的果冻。特定的细菌被栽培到营养液上,就可以大量繁殖成为肉眼可辨别的细菌团块。一个月归来,弗莱明发现了这只放在无菌培养箱外的培养皿。他本来是要丢掉的,因为这个培养皿里可能混进了别的细菌,那它本来要大量培养的那一种细菌就被污染了。但就在此时,弗莱明注意到一个奇特的现象:在一团绿色的杂菌团块外,出现了一道圆环,这道
In the summer of 1989, when Fleming packed up the lab and was ready for a leisurely vacation, he would never have imagined that a Petri dish he had forgotten in a sterile incubator by his side would give human belts What to. This petri dish, however, has a palm-size and agar-rich nutrient is like a colorless jelly. Specific bacteria that have been cultivated on nutrient solutions can multiply in large quantities to become discernible bacterial masses. Returning in a month, Fleming discovered the Petri dish just outside the sterile incubator. He was going to lose it because the petri dish might have mixed with other bacteria, and the bacteria that it had to cultivate in large quantities was contaminated. But at this moment, Fleming noticed a peculiar phenomenon: a green circle outside the cluster of bacteria, there was a ring, this road