CD4 and cervical cancer: However, we may possibly have to discard this possibility due to the fact that in our analysis the lowest levels of systemic IL-17 were actually found in cervical cancer patients with high numbers of CD4+NKG2D+ T cells (data not shown); however, we will clearly need more studies to specifically detect the cytokine pattern produced by this particular population of CD4+NKG2D+ T cells in cervical cancer patients.