Cutting edge: sustained expansion of CD8+ T cells requires CD154 expression by Th cells in acute graft versus host disease.
Buhlmann JE, Gonzalez M, Ginther B, Panoskaltsis-Mortari A, Blazar BR, Greiner DL, Rossini AA, Flavell R, Noelle RJ. Cutting edge: sustained expansion of CD8+ T cells requires CD154 expression by Th cells in acute graft versus host disease. J Immunol. 1999 Apr 15; 162(8):4373-6.