Table 2. Main demographic and laboratory features of HTLV-I carriers* .
| Control # | Gender | Age (years) | Neopterin serum nmol/L | Neopterin CSF nmol/L | Protein CSF mg/dL | Glucose CSF mg/dL | Cell count CSF cel/mm3 |
| 1 | M | 38 | 4.3 | 2.2 | 56 | 68 | 2 |
| 2 | F | 46 | 3.6 | 2.7 | 39 | 77 | 0 |
| 3 | F | 47 | 4.5 | 3.2 | 75 | 61 | 8 |
| 4 | F | 35 | 4.8 | 5.2 | 98 | 57 | 14 |
| 5 | M | 54 | 6.6 | 3.0 | 88 | 78 | 1 |
| 6 | F | 36 | 2.8 | 4.5 | 52 | 67 | 3 |
* HTLV-I carriers who consented to have CSF collected; M: male, F: Female; Age (years); CSF: cerebrospinal fluid; Reference values for: serum neopterin concentration ≤ 10 nmol/L, CSF neopterin concentration ≤ 4.2 nmol/L, CSF protein concentration = 15-40 mg/dL; CSF glucose levels = 2/3 of serum glucose levels or 50-70 mg/dL, CSF cell count ≤ 4 cell/mm3.