Elan Corporation, plc (Elan) is a neuroscience-based biotechnology company. Its principal research and development, manufacturing and marketing facilities are located in Ireland and the United States. Elan’s operations are organized into two business units: Biopharmaceuticals and Elan Drug Technologies (EDT). Biopharmaceuticals engages in research, development and commercial activities primarily in neuroscience, autoimmune and severe chronic pain. EDT focuses on the specialty pharmaceutical industry, including specialized drug delivery and manufacturing. In September 2009, the Company and Johnson & Johnson announced that JANSSEN Alzheimer Immunotherapy, a newly formed subsidiary of Johnson & Johnson, has completed the acquisition of substantially all of the assets and rights of Elan related to its Alzheimer`s Immunotherapy Program (AIP).