In 1928, bacteriologist Alexander Fleming made a ____ discovery from an already discarded, contaminated ____ dish. The mold that had contaminated the ____ turned out to contain a ____ antibiotic, penicillin. However, although Fleming was ____ with the discovery, it was over a decade before someone else turned penicillin ____ the miracle drug for the 20th ____. How did this Petri dish almost ____ cleaned before being noticed? How did ____ mold get onto the dish? Who ____ penicillin into a useful drug?

EAP II AS Wk 4 Reading cloze Group 1

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