LD50 04 : A dose of a substance that produces death in 50% of a population of experimental animals. It is usually expressed as milligrams per kilogram of body weight. See also: EC50, ED50, LC50, LC100, and LD100
Peter Koob (Compiler & Typesetter, Tasmania State Emergency Service), Emergency Management Australia (Ed & Pub), Australian Emergency Management Glossary (Australian Emergency Manuals Series Part I: The Fundamentals, Manual 3), ISBN0642476152, Tasmania, Australian 1998. http://www.em.gov.au/Documents/Manual03-AEMGlossar y.PDF, (Emr Mgt/ ND and Other Dzstr - Brit) {53}