|Alexandria Real Estate Equities, Inc. is a real estate investment trust (REIT). The Company is an owner and REIT, and life science real estate company, focused on science-driven cluster development through the ownership, operation, management, selective acquisition, development, and redevelopment of properties containing life science laboratory space. Client tenants include institutional (universities and independent non-profit institutions), pharmaceutical, biotechnology, medical device, product, and service entities and government agencies. In August 2011, the Company sold a parcel of land located in San Diego, California. In October 2011, the Company sold 13-15 DeAngelo Drive. In June 2011, the Company acquired 285 Bear Hill Road. In April 2011, the Company acquired 409 and 499 Illinois Street, a 453,256 rentable square foot life science laboratory development project. During the year ended December 31, 2011, the Company also acquired 4755 Nexus Center Drive.