![Requirement for CD40 Ligand in Costimulation Induction, T Cell Activation, and Experimental Allergic Encephalomyelitis]()
Requirement for CD40 Ligand in Costimulation Induction, T Cell Activation, and Experimental Allergic EncephalomyelitisGrewal, I. S.; Foellmer, H. G.; Grewal, K. D.; Xu, J.; Hardardottir, F.; Baron, J. L.; Janeway, C. A.; Flavell, R. A. · Science · 1996