CD4 and myeloid sarcoma: Importantly, GA at concentrations of 50 μg/ml and 100 μg/ml may have a clear inhibitory effect on the production of IL-17 and IFN-γ by PBMCs and CD4+ T cells in MS patients (Figs 1A, 1C, 2A and 2C) without affecting cell viability and proliferative responses [21].