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		Toxic Substances: Hazardous Substances
		TCAS provides toxicological assessment services for a wide range of hazardous substances [a] Hazardous substances constitute a special class of toxic agents in that they pose immediate dangers to human health via simple contact or proximity. TCAS provides toxicological consulting and assessment services for a wide range of hazardous toxic substances,... (more)

		Hazardous Substances: Metals and Compounds
		Overview Metals and compounds all possess unique toxicological properties [a] Metals and compounds represent a special class of hazardous substances in that they each possess physical properties unique to that substance and impose specific, well-documented toxicological effects. Heavy metals in particular can pose significant and persistent environmental... (more)

		Site Map
		Toxicology Consultants and Assessment Specialists, LLC TCAS has devoted its website to the role of the expert toxicologist and the science of toxicology. The following pages present both original and edited public-domain information compiled as a useful educational resource. This site map is a content reference intended to assist with rapid location... (more)

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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.