CD4 and tuberculosis: As shown in Fig. 5B, in TB group and HT group, TCRαβ+ DNT cells secreted more granzyme A (p = 0.002; p = 0.002) and perforin (p < 0.001; p = 0.017) than CD4+ T cells and the secretion of granzyme A and perforin between TCRαβ+ DNT cells and CD8 + T cells had no significant difference.