| http://www.w3.org/ns/prov#value | - Alternatively, an APC such as a macrophage, monocyte, interdigitating dendritic cell (referred to herein as a dendritic cell), or B cell can be transformed, transduced, or transfected with a nucleic acid containing a nucleotide sequence that encodes a variant costimulatory polypeptide, and the T cell can be contacted by the transformed, transduced, or transfected APC. The transformed, transduced,
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