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median lethal inhalation dose

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  • Median lethal dose — This article is about the toxicological term. For the album by Mudvayne, see L.D. 50 (album). For other uses, see LD50 (disambiguation). In toxicology, the median lethal dose, LD50 (abbreviation for “Lethal Dose, 50%”), LC50 (Lethal Concentration …   Wikipedia

  • drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… …   Universalium

  • Drug — /droog/, n. Zoroastrianism. the cosmic principle of disorder and falsehood. Cf. Asha. [ < Avestan drauga] * * * I Any chemical agent that affects the function of living things. Some, including antibiotics, stimulants, tranquilizers,… …   Universalium

  • Heroin — Not to be confused with heroine. For other uses, see Heroin (disambiguation). Heroin …   Wikipedia

  • Biological warfare — For the use of biological agents by terrorists, see bioterrorism. Weapons of mass destruction …   Wikipedia

  • Mutagen — In genetics, a mutagen (Latin, literally origin of change) is a physical or chemical agent that changes the genetic material, usually DNA, of an organism and thus increases the frequency of mutations above the natural background level. As many… …   Wikipedia

  • Animal testing — A white Wistar lab rat Description Around 50–100 million vertebrate animals are used in experiments annually. Subjects Animal testing, scien …   Wikipedia

  • LOAEL — Unter der Toxizitätsbestimmung versteht man die Feststellung der Giftigkeit oder Schädlichkeit eines Stoffes. Die Toxizitätsbestimmung beruht auf Methoden, die von den zuständigen internationalen Stellen (insbesondere der OECD) anerkannt und… …   Deutsch Wikipedia

  • Toxizitätsbestimmung — Unter der Toxizitätsbestimmung versteht man die Feststellung der Giftigkeit oder Schädlichkeit der Toxizität eines Stoffes. Die Toxizitätsbestimmung beruht auf Methoden, die von den zuständigen internationalen Stellen (insbesondere der OECD)… …   Deutsch Wikipedia

  • Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro …   Wikipedia

  • Molybdenum — niobium ← molybdenum → technetium Cr ↑ Mo ↓ W …   Wikipedia

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