Alexander Fleming — "It was not easy to convince people of the importance of penicillin in the early …"
It was not easy to convince people of the importance of penicillin in the early days.
It was not easy to convince people of the importance of penicillin in the early days.
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"The early days of penicillin were full of disappointments, but we never gave up."
"It has been said that I am a lucky man. I agree. I have been very lucky."
"I am not a very good speaker, but I hope my work speaks for itself."
"It is not difficult to make microbes resistant to penicillin in the laboratory by exposing them to concentrations not sufficient to kill them."
"I am sometimes asked what I think of the future of penicillin. I think it has a great future, but it must be used wisely."
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