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Questions and Answers
POPs such as PCDDs, PCDFs, and PCBs assessments of toxicity and exposure risks are more complex due to occurring in the environment as mixtures of congeners with a wide range of potential ____________
toxicities
Dioxins, furans, and dioxin-like PCBs have similar chemical structures, properties, and ____________
toxicities
By convention, when discussing toxicity and exposure risks, the term dioxins or total dioxins is generally taken to include ____________, PCDFs, and dioxin-like PCBs
PCDDs
Dioxin-like PCBs exhibit similar toxicity to dioxins, with toxic responses expressed including dermal toxicity, immunotoxicity, reproductive deficits, teratogenicity, endocrine toxicity, and ____________
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In the environment, PCDDs, PCDFs, and dioxin-like PCBs are usually present in complex ____________
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The proportion of PCB congeners present in environmental samples is often related to the composition of the commercial formulation that is the source of contamination, such as ____________
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The World Health Organization (WHO) identifies 29 closely-related PCDD, PCDF, and dioxin-like PCB congeners as having a common mechanism of toxicity to ____________
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Assessment of Toxicity and Exposure Risks for Dioxins, Furans, and Dioxin-Like PCBs is a part of the ____________
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The Meaning and Use of the Terms TEF and TEQ is important in the context of ____________
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PCBs are often associated with ____________ toxicity similar to that observed for 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)
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