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Charles River Laboratories International, Incorporated is an American life sciences company and contract research organisation (CRO) headquartered in Wilmington, Massachusetts, United States. Founded in 1947, the company provides products and services that support the development of drugs, vaccines, and other therapeutics. Its operations span at least 20 countries, offering research models, drug discovery and safety assessment, and manufacturing and testing services to pharmaceutical, biotechnology, government, and other clients. Charles River Laboratories is a global provider of non-clinical drug development services, known for its role in toxicology studies, research animal models, and microbial testing services used in regulatory submissions to health authorities such as the U.S. Food and Drug Administration (FDA). The company has also been the subject of public scrutiny and regulatory attention over its use of research animals, including dogs, primates, and horseshoe crabs.