CD19 and tuberculosis: Into the CD19+ gate, the expression of CD5 was evaluated (Figure 2C), and LTB showed a higher frequency of CD19+CD5+ cells [10 (6–13)], compared to UC [4 (4–5), p < 0.0170], DS-TB [5 (3–7), p < 0.0408], and DR-TB [4 (2–6), p < 0.0040] (Figure 2D).