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lethal dose 50

The amount of a single dose of a solid or liquid substance required to kill 50% of the tested population. It is usually expressed in mg/kg (milligram of material per kilogram of body weight) and is used for all routes of exposure other than inhalation. Compare "lethal concentration 50".
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Entry Terms:
  • LD50
  • lethal dose-50
  • LD-50
  • LD 50
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RDF/XMLCreated 2006-01-19, last modified 2017-10-11
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