Nick Harrison on Flickr In this building Howard Florey, Ernst Chain, Norman Heatley & colleagues first isolated and purified penicillin for the treatment of bacterial infection, 1938-1941 Sir William Dunn School of Pathology, South Parks Road, Oxford 29 May 2018 by Oxfordshire Blue Plaques Board on 29 May 2018 Colour: blue Wikimedia: Copy to clipboard Flickr: Copy to clipboard How to add yours Owen Massey McKnight on Flickr Google Streetview OpenStreetMap See also... Spudgun67 on Flickr Nick Harrison on Flickr Kastrel on Wikimedia Commons Prof Sir Ernst Chain 1906-1979 Nobel Prize Winner - Penicillin 1945 Founder Imperial Co... Doris Antony, Berlin on Wikimedia Commons