Fig. 1From: Cerebrospinal fluid levels of glial marker YKL-40 strongly associated with axonal injury in HIV infectionGroup comparisons of CSF (cerebrospinal fluid) levels of a YKL-40, b neopterin, and c NFL. Boxes in panels depict median and IQR, whiskers show 10–90 percentiles, and the plus sign designates the meansBack to article page