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Analysis Chemical Thank You Explainer: carcinogen classification in the E.U., U.S., and internationally

Agency IQ

uses the United Nations (UN) Globally Harmonized System (GHS) , sometimes called the “purple book,” as the basis for its carcinogen classification. This framework is anchored in the Classification, Labeling, and Packaging Regulation (CLP) (1272/2008/EC), the bloc’s definitive legislation on classifying substances and mixtures.

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Origins of the Lab Mouse

Codon

At that time, even though animal breeders had long exploited regularities in the patterns of inheritance, the principles underlying heredity remained mysterious. That is—until the Austrian monk Gregor Mendel showed that traits are passed from parent to offspring in discrete, independently assorted packages.