Charles River Laboratories International, Inc., is an American pharmaceutical company specializing in a variety of preclinical and clinical laboratory, gene therapy and cell therapy services for the pharmaceutical, medical device and biotechnology industries. It also supplies assorted biomedical products, outsourcing services, and animals for research and development in the pharmaceutical industry (for example, contract research organization services) and offers support in the fields of basic research, drug discovery, safety and efficacy, clinical support, and manufacturing.