| http://www.w3.org/ns/prov#value | - For example, antibodies, including monoclonal antibodies and antibody fragments, can be prepared by a number of methods known to those of skill in the art, or can be purchased from a variety of commercial vendors, including Serotec (Raleigh, N.C.), Abcam (Cambridge, Mass.), R&D Systems, Cambridge Antibody Technologies, and Covance Research Products (Denver, Colo.).
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