WASHINGTON--The Environmental Protection Agency (EPA) is proposing
that scientists rely less on animal testing and more on microbiological
studies in calculating the cancer risk of chemicals and pollutants.
The new regulations would place more emphasis on how chemicals
actually affect human cells.
The changes could have a major impact on the country's programs
to control pollution and pesticide use. The new regulations were
published in the Federal Register in April, and will be put into
final form after completion of 4 months of public comment.