Penicillin!

"By January 1941, [Howard Florey] and his team had produced enough penicillin to begin clinical trials on six patients dying of bacterial infections in Oxford’s Radcliffe Infirmary. The infirmary’s Dr. Charles Fletcher supervised the trials, giving penicillin to all six dying patients. Five survived. One died after the penicillin supply ran out." ~ The Doc, famousscientists.org/howard-florey

Who Discovered Penicillin?
"...discovered in 1929 by Scottish Researcher Alexander Fleming. After returning to work at St. Mary’s Hospital in London, following two weeks off, he found mould preventing the growth of bacteria in his petri dish. This mould was the antibiotic." ~ Sophie Gee, historyhit.com/key-medical-events-in-history/

For more information see: https://www.ox.ac.uk/news/2016-11-01-75th-anniversary-first-penicillin-treatment-commemorated

Images:
1) Professor Alexander Fleming, holder of the Chair of Bacteriology at London University, who first discovered the mould Penicillin Notatum. Here in his laboratory at St Mary’s, Paddington, London (1943). (Credit: Public Domain).

2) Sir Howard Walter Florey, Nobel Prize in Medicine 1945
By Nobel Foundation - nobelprize.org/nobel_prizes/medicine/laureates/1945/florey.html, Public Domain, commons.wikimedia.org/w/index.php?curid=9713539

3) Penicillin Past, Present and Future- the Development and Production of Penicillin, England, 1944
Dr Ernest Chain undertakes an experiment in his office at the School of Pathology at Oxford University. Dr Chain originally came from Germany, but became a naturalised British subject in 1933. With his colleague, Professor Florey, and their team, he was instrumental in the isolation of penicillin. (Credit: Public Domain. This is photograph D 17806 from the collections of the Imperial War Museums).