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: Flickr: 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