IL6 and Menkes disease: Immunofluorescent staining showed a strong cytoplasmic immunofluorescence signal for IL-6 (Figure 6A), IFN-γ (Figure 6B) and TNF-α (Figure 6E) and a minimal cytoplasmic immunofluorescence signal for IL-10 (Figure 6F) along with the marker of nuclei, DAPI (blue) (Figures 6C,G) in the epithelial cells of the ES from the sac specimens of patients with MD.