IL17F and tick-borne encephalitis: The cerebrospinal fluid parameters in tick-borne encephalitis patients on admission to hospital are shown on vertical axes: lymphocyte count expressed in cells/μl (left), total protein concentration expressed in mg/dl (center), albumin concentration in mg/dl (right), plotted against the simultaneous CSF cytokine concentrations presented on horizontal axes, expressed in pg/ml: IL-17F in the upper and CXCL1 in the lower row.