![]() Alexander Fleming | ![]() Early penicillin culture facility at the Sir William Dunn School of Pathology, Oxford, England. © Museum of the History of Science, Oxford | ![]() Alexander Fleming at Work Courtesy, St. Mary's Medical School Hospital, London |
![]() Photograph courtesy of Merck Archives, ©Merck & Co. Inc. Refrigeration equipment for large fermentation unit at Cherokee Plant, Danville, PA. |
![]() Photograph courtesy of Merck Archives, ©Merck & Co. Inc. Fermentation unit used in purifying penicillin in 1945. |
![]() Photograph courtesy of Merck Archives, ©Merck & Co. Inc. Upper part of fermentors (tanks) used to produce penicillin and vitamin B12. |




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