IL6 and keratoconus: Synergistic increase in the IL-6 secretion in KC/HFCD as compared to WT/CD by the peri-pancreatic adipose-derived cells with NK cells in the presence of decreased IFN-γ secretion (54% decrease in KC/HFCD as compared to WT/CD), could be one mechanism by which the adipose tissue can contribute to the increased proliferation of pancreatic tumors.