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By Lynn L. Bergeson The EC updated the European Union (EU) Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) regulation on March 25, 2022, to clarify the information required by registrants of substances. Major changes include: Requirements and specific rules for adaptation of: In vitro and in vivo mutagenicity studies, specifying when further studies are needed based on mutagenicity concerns; Reproductive toxicity studies, specifying the preferred...