1I8L: Human B7-1ctla-4 Co-Stimulatory Complex
reference: Crystal structure of the B7-1/CTLA-4 complex that inhibits human immune responses., Stamper CC, Zhang Y, Tobin JF, Erbe DV, Ikemizu S, Davis SJ, Stahl ML, Seehra J, Somers WS, Mosyak L, Nature 2001 Mar 29;410(6828):608-11. PMID: 11279502

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