Alexander Fleming — "It is not difficult to make microbes resistant to penicillin in the laboratory b…"
It is not difficult to make microbes resistant to penicillin in the laboratory by exposing them to concentrations not sufficient to kill them.
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More from Alexander Fleming
"I can only warn. It is up to others to heed the warning."
"Nature makes penicillin; I just found it."
"It has been said that I am a lucky man. I agree. I have been very lucky."
"The next time you are tempted to throw away a contaminated culture, remember the penicillin."
"It is a remarkable fact that this substance, which is so potent against bacteria, is almost harmless to animal tissues."
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