LD50 05 : A dose of a substance that produces death in 50% of a population of experimental animals. LD50s may be estimated after swallowing, injection or after application to the skin. It is usually expressed as mg per KG of body weight
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}