Depression is an inflammatory disease, but cell-mediated immune activation is the key component of depression
Keywords: IL-1β, interleukin-1β; IL-6, interleukin-6; TNF, tumor necrosis factor-α; Th, T helper; sIL-2R, soluble interleukin-2 receptor; IFNγ, interferon-gamma; IRS, inflammatory response system; HPA-axis, hypothalamic-pituitary-adrenal-axis; IDO, indoleamine 2,3-