CXCL9 and tropical spastic paraparesis: The results indicated that CSF levels of CXCL10, neopterin, and CXCL9 were remarkably higher in HAM/TSP patients compared to control subjects (p<0.0001 overall, Figures 2A and S4) and that CSF levels of cell count and CCL5 were less so but still significantly higher (p = 0.0019 and p = 0.0119, respectively; Figure 2A).