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http://www.cerc.usgs.gov/data/acute/acute.html

» Acute Toxicity Database - Statistical approaches for taxonomic comparisons, and factors such as age, pH, temperature, water hardness, and diet affecting toxicological outcome. Maintained by the Columbia Environmental Research Center, Missouri.

» Distributed Structure-Searchable Toxicity Database Network - DSSTox provides a community forum for publishing standard format, structure-annotated toxicity data files for open public access. Offers search based on chemical formula, maintained by the Environment Protection Agency, USA.

» Registry of Toxic Effects of Chemical Substances - Information about the database of toxicological information compiled, maintained, and updated by the National Institute for Occupational Safety and Health.

» Tetratox - Database of toxic potency data for more than 2,100 industrial organic compounds maintained by the College of Veterinary Medicine, University of Tennessee, Knoxville.

http://www.sis.nlm.nih.gov/Tox/ToxMain.html

» Toxicology and Environmental Health Information - Databases and resources related to toxicity, hazardous chemicals and ecological hazards, at National Library of Medicine, Bethesda, Maryland.

http://www.lib.uiowa.edu/hardin/md/tox.html

» Toxicology sites - Toxicology sites maintained by Dr. Hardin, at University of Iowa.

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