Manufacturing Penbritin, 1961.
© NMeM / Daily Herald Archive / Science & Society Picture Library
A photograph of technicians working in a laboratory, taken by R Burton for the Daily Herald newspaper in 1959. Mrs Shirley Stevens, a bacteriologist, and an assistant are working in a laboratory at the Beecham Research Laboratories, near Dorking, Surrey. They are testing Penbritin, an antibiotic, against strains of harmful bacteria. Antibiotics are chemicals effective at very low concentrations which can kill or stop the growth of a disease-causing microbe. Penbritin was hailed at the time as the most important medical disovery since that of penicillin.