NGF and leprosy: Internal analysis in the group of HIV-positive leprosy patients demonstrated that NGF expression was more relevant in multibacillary clinical forms, especially among those using HAART (472.91 ± 469.69 labeled cells per square millimeter) (Figure 4A) and who were diagnosed with leprosy in the period suggestive of immune restoration (in the first six months after starting therapy) (622.30 ± 161.06 labeled cells per square millimeter) (Figure 4B).