A Message from Dr. William R. Sawyer
Chief Toxicologist, TCAS, LLC
"Toxicology is a complex science involving the study of adverse effects of
chemical substances on living organisms and the environment. Our website barely
scratches the surface. I invite you to contact our office if you have questions
or would like additional information."
This is an informational and instructional website devoted to toxicology. It presents
both original and edited public-domain content compiled as a useful educational resource.
References and footnotes have been included wherever possible and image sources
have been cited where appropriate. Although most pages can be printed or downloaded
as PDF files (and we encourage you to make constructive use of our information),
this website is copyrighted and material may only be reproduced and/or
distributed with prior permission from TCAS, LLC.