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The Journal of Experimental Medicine|June 1, 1996
CTLA-4 ligation blocks CD28-dependent T cell activationT L Walunas, C Y Bakker, J A Bluestone
Immunity|August 1, 1994
CTLA-4 can function as a negative regulator of T cell activationT L Walunas, D J Lenschow, C Y Bakker, et al.
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