| http://www.w3.org/ns/prov#value | - Other highly specific immunosuppressive therapies have been used in recent studies.17,29- 31 CTLA4Ig is a fusion protein that binds to B7-1 and B7-2 molecules on the surface of antigen-presenting cells and inhibits the CD28/B7-mediated costimulatory signal for T-cell activation.
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