Crystal structure of a soluble CD28-Fab complex

Evans EJ, Esnouf RM, Manso-Sancho R, Gilbert RJ, James JR, Yu C, Fennelly JA, Vowles C, Hanke T, Walse B, Hünig T, Sørensen P, Stuart DI, Davis SJ. (2005), Nat Immunol. 6, 271-9