1. National Food Safety and Toxicology Center, Michigan State
University, East Lansing, Michigan 48824, Institute for
Environmental Toxicology, Michigan State University,
East Lansing, Michigan 48824, ENTRIX,
East Lansing, Michigan 48823, Zoology Department,
Michigan State University, East Lansing, Michigan 48824,
University of Gdañsk, PL 80-952 Gdañsk, Poland, National
Institute for Resources and Environment, 16-3 Onogawa,
Tsukuba, Ibaraki 305, Japan, and Wallenberg Laboratory,
Department of Environmental...