Toxicity testing in the 21st century: a vision and a strategy.

Advances in molecular biology, biotechnology, and other fields are paving the way for major improvements in how scientists evaluate the health risks posed by potentially toxic chemicals found at low levels in the environment. These advances would make toxicity testing quicker, less expensive, and more directly relevant to human exposures. This National Research Council report creates a far-reaching vision for the future of toxicity testing.