Figure 2. Patients with disseminated TB have significantly lower IgG2 reactivity to Mtb capsular AM.

Comparison of IgG (A) and IgG subclass (B and C) responses to capsular AM (H37Rv) between TB patients with localized pulmonary (n = 12) and those with disseminated disease (n = 11). Sera were tested at 1:50 dilutions. Mann-Whitney U test. Lines and error bars represent medians with IQRs.