Professor Sir Kenneth Murray - Telegraph Hepatitis is a devastating liver disease. In the 1970s, in the quest for a vaccine, Murray began to use the new field of genetic engineering. Working with a team that included his wife, Noreen, he developed recombinant DNA technology, or gene cloning. This is a process in which DNA from two different species are inserted into a host organism, allowing for new genetic combinations. It represented a revolution for scientists in terms of understanding how cells work, how genetics works and how to understand the development of organisms so treatments can be devised when things go wrong. Murray immediately applied these ideas to a practical task - creating a vaccine for hepatitis B. This condition, which today still affects more than 300 million unvaccinated people around the world, lacked reliable treatment and could be fatal. Murray found a way to identify the hepatitis B virus and then produced a man-made vaccine. This was done under difficult conditions, as some critics considered genetic engineering technology a threat in itself. As a result he had to work in secure laboratory facilities. None the less, by 1978 he and colleagues had created the vaccine. Murray then established Biogen, a company which commercially developed it for use. Today, the global market for the hepatitis vaccine exceeds $1 billion. Kenneth Murray was born on December 30 1930 in Yorkshire and brought up in the Midlands, the son of a miner turned school caretaker. He attended Henry Mellish Grammar School and left at the age of 16 to become a laboratory technician at Boots in Nottingham. After part-time study he obtained a first-class honours degree in Chemistry and a PhD in Microbiology from the University of Birmingham. It was in Birmingham that he met Noreen Parker, then studying for a PhD in Microbial Genetics. They married in 1958 and she went on to become a close scientific collaborator. Murray continued his research at Stanford University in America, and returned to Britain in 1964, where he worked in the Medical Research Council laboratory of molecular biology. He joined the University of Edinburgh in 1967 at what was then the only department of molecular biology in the country. He was appointed Biogen Professor of Molecular Biology in 1984. Murray used income from the commercialisation of the vaccine to found the Darwin Trust in 1983. The trust has supported the education of many young scientists, and helped to fund cutting-edge research and improved facilities at the University of Edinburgh. Following his retirement Murray dedicated himself increasingly to the trust's efforts. He was elected a Fellow of the Royal Society in 1979, received the Willem Meindart de Hoop Prize in 1983, and in 1992 was given a Saltire Society Science Award. In 2000 he was awarded a Royal Medal by the Royal Society of Edinburgh, and two years ago he and his wife jointly received a lifetime achievement award from Nexus Life Sciences. He was knighted in 1993. Recently the Noreen and Kenneth Murray Library was built at the King's Buildings Science Campus at the University of Edinburgh, recognising the couple's distinguished careers and their commitment to the advancement of science and engineering. Kenneth Murray's wife predeceased him in 2011. Professor Sir Kenneth Murray, born December 30 1930, died April 7 2013