FIGURE 3.

Classification tree using relative expression of NPC2 mRNA by RT-qPCR (cut-off 0.133) in conjunction with clinical and radiological information. Latent TB infection probability groups: G.I very low, G.II low to moderate, and G.III moderate to high; and patients with active pulmonary tuberculosis (TB) grouped by the time (days) elapsed between the anti-TB treatment onset and the blood collection for this study (G.IV: 0–2 days; G.V: 3–6 days; and G.VI: ≥7 days).