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Toxicology, environmental health, and chemical databases and other information resources from the Toxicology and Environmental Health Information Program, National Library of Medicine, National Institutes of Health

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Analytical services and analytical laboratory testing by Columbia Analytical. Expert analytical services for air, water, sediment, tissue.

Roanoke College, a classic liberal arts college in Salem, Virginia, combines firsthand learning with valuable personal connections in a beautiful, undergraduate setting. Roanoke is one of just seven percent of colleges nationwide with a chapter of Ph...

Medical Dictionary is intended for use by healthcare consumers, students, and professionals as well as anyone who wants to keep up with the burgeoning array of terminology found in today’s medical news. By staying clear of jargon, the dictionary o...

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.