Biological Effects of Low-level Exposures: A Perspective from U.S. EPA Scientists

摘要

Biological effects of low-level exposures (BELLE) may be very important in characterizing the potential health risks of environmental pollutants. Before some features of BELLE, such as effects that may be modulated by adaptive or defense mechanisms, can be taken into greater consideration in U.S. Environmental Protection Agency risk assessments, however, adequate information on a toxicant's mode of action and answers to other questions are needed.