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Toxic Effects Characterization Research Branch

Joseph E. Tietge, Branch Chief and Supervisory Research Biologist

The Toxic Effects Characterization Research Branch advances understanding of the effects of chemicals and their interactions with non-chemical stressors, to improve assay methods and to interpret population and community-level effects.

Gerald T. Ankley, Research Toxicologist
Brian C. Butterworth, Chemist
Elizabeth J. Durhan, Research Chemist
Jon Haselman, Biologist
Larry J. Heinis, Chemist
Gary W. Holcombe, Research Aquatic Biologist
Kathleen M. Jensen, Biologist
Michael D. Kahl, Biologist
Patricia A. Kosian, Chemist
Elizabeth A. Makynen, Chemist
Teresa J. Norberg-King, Research Aquatic Biologist
Dan Villeneuve, Postdoctoral Research Biologist

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