1I85: Crystal Structure Of The Ctla-4b7-2 Complex
reference: Structural basis for co-stimulation by the human CTLA-4/B7-2 complex., Schwartz JC, Zhang X, Fedorov AA, Nathenson SG, Almo SC, Nature 2001 Mar 29;410(6828):604-8. PMID: 11279501

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