| http://www.w3.org/ns/prov#value | - A method of initiating T-cell activation comprising administering to a population of T cells a polypeptide having amino terminal amino acids 1-92 of lymphocyte functioning associated antigen-3 (LFA-3) joined to a protein or polypeptide other than LFA-3, wherein the protein or polypeptide other than LFA-3 comprises a portion of hinge, CH 2 and CH 3 constant domains of an immunoglobulin.
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