IL-4 potentiates activated T cell apoptosis via an IL-2-dependent mechanism.
Zhang J, Bárdos T, Shao Q, Tschopp J, Mikecz K, Glant TT, Finnegan A. IL-4 potentiates activated T cell apoptosis via an IL-2-dependent mechanism. J Immunol. 2003 Apr 01; 170(7):3495-503.