CD4 and sarcoidosis: This analysis revealed that nearly 30-fold IL-2 and 5-fold IFN-γ were produced upon TCR stimulation above the level of spontaneous secretion of each cytokine (Figures 1(e) and 1(f); p < 0.0001), demonstrating that while sarcoidosis CD4+ T cells were exhibiting spontaneous Th1 cytokine expression, the amount secreted was not at capacity.