Biology: Web Sites

Instant access to reliable, cutting-edge information and educational tools for biology and related subjects. Provide accurate and current information and materials that build upon and enhance the skills and knowledge of science educators.

This site contains info related to allergenics, cell & gene therapy, tissues, blood, vaccines, biologics, and xenotransplantation. It is maintained by the U.S. Department of Health & Human Services and the FDA.

More than 80,000 chemicals are registered for use in the United States. Each year, an estimated 2,000 new ones are introduced for use in such everyday items as foods, personal care products, prescription drugs, household cleaners, and lawn care products. We do not know the effects of many of these chemicals on our health, yet we may be exposed to them while manufacturing, distributing, using, and disposing of them or when they become pollutants in our air, water, or soil.