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DNA sequencing methods that encode the receptor protein and methods for the use of soluble forms of the receptor protein and its ligands to control the interactions of the T cells with the B cells
DNA sequencing methods that encode the receptor protein and methods for the use of soluble forms of the receptor protein and its ligands to control the interactions of the T cells with the B cells
The invention identifies the CTLA4 receptor as a ligand for the B7 antigen. The complete amino acid sequence encoding human CTLA4 receptor gene is provided. Methods are provided for expressing CTLA4 as an immunoglobulin fusion protein, for preparing hybrid CTLA4 fusion proteins, and for using the soluble fusion proteins, fragments and derivatives thereof, including monoclonal antibodies reactive with B7 and CTLA4, to regulate T cell interactions and immune responses mediated by such interactions.
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