Foy, Page, Waldschmidt, Schoneveld, Laman, Masters, Tygrett, Ledbetter, Aruffo, Claassen, Xu, Flavell, Oehen, Hedrick, Noelle: "An essential role for gp39, the ligand for CD40, in thymic selection." in: The Journal of experimental medicine, Vol. 182, Issue 5, pp. 1377-88, 1995 (PubMed).
Aruffo, Farrington, Hollenbaugh, Li, Milatovich, Nonoyama, Bajorath, Grosmaire, Stenkamp, Neubauer: "The CD40 ligand, gp39, is defective in activated T cells from patients with X-linked hyper-IgM syndrome." in: Cell, Vol. 72, Issue 2, pp. 291-300, 1993 (PubMed).
Foy, Shepherd, Durie, Aruffo, Ledbetter, Noelle: "In vivo CD40-gp39 interactions are essential for thymus-dependent humoral immunity. II. Prolonged suppression of the humoral immune response by an antibody to the ligand for CD40, gp39." in: The Journal of experimental medicine, Vol. 178, Issue 5, pp. 1567-75, 1993 (PubMed).
Roy, Waldschmidt, Aruffo, Ledbetter, Noelle: "The regulation of the expression of gp39, the CD40 ligand, on normal and cloned CD4+ T cells." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 151, Issue 5, pp. 2497-510, 1993 (PubMed).
Noelle, Roy, Shepherd, Stamenkovic, Ledbetter, Aruffo: "A 39-kDa protein on activated helper T cells binds CD40 and transduces the signal for cognate activation of B cells." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 89, Issue 14, pp. 6550-4, 1992 (PubMed).
Hollenbaugh, Grosmaire, Kullas, Chalupny, Braesch-Andersen, Noelle, Stamenkovic, Ledbetter, Aruffo: "The human T cell antigen gp39, a member of the TNF gene family, is a ligand for the CD40 receptor: expression of a soluble form of gp39 with B cell co-stimulatory activity." in: The EMBO journal, Vol. 11, Issue 12, pp. 4313-21, 1992 (PubMed).
Armitage, Fanslow, Strockbine, Sato, Clifford, Macduff, Anderson, Gimpel, Davis-Smith, Maliszewski: "Molecular and biological characterization of a murine ligand for CD40." in: Nature, Vol. 357, Issue 6373, pp. 80-2, 1992 (PubMed).