FIG. 1.

(a) CXCL13 concentrations measured in the CSF of patients with NIND (n = 20), Lyme NB (n = 19), NS (n = 15), and PM (n = 10). An asterisk indicates that the P value is ≤0.001 for a comparison with NIND and PM patients. The P value for NB compared to NS is <0.01. The CXCL13 values for the CSF were expressed in relation to the amount of total CSF protein to account for the disruption of the blood-brain barrier. (b) CSF-to-serum ratios calculated by dividing the CXCL13 concentration (pg/ml) in the CSF by the serum concentration for each patient. The asterisk indicates that the P value is ≤0.001 for comparisons with all other patient groups. All error bars indicate the standard error of the mean.