CCR5 and tuberculosis: As shown in Fig. 4, lower frequency of CCR5 expression on TCRαβ+ DNT cells was observed in HIV group (p = 0.014) and HT group (p = 0.005) than that in HC group, and lower frequency of CCR5 expression on TCRαβ+ DNT cells was observed in HT group than that in TB group (p = 0.036).