C4A and tuberculosis: The results between TB patients and HCs showed significant differences in neutrophil percentage (P < 0.001), lymphocyte percentage (P < 0.001), monocyte percentage (P = 0.007), basophil percentage (P = 0.001), Immunoglobulin A (IgA, P = 0.001), Immunoglobulin M (IgM, P = 0.001), Complement C3 (C3, P < 0.001), Complement C4 (C4, P = 0.001), B-factor (P < 0.001), and C-reactive protein (CRP, P = 0.001)(Table 2).