Fig. 5.
Perforin and CD107a expression in γδT cells from peripheral blood (PB) and pleural effusion (PE) mononuclear cells cells. Perforin expression was determined ex vivo in total γδ T cell (a) or γδT cell receptor (TCR)high and γδTCRlow cells (b) from PB and PE. Results are expressed as percentage of positive cells among γδT cell subpopulations. Statistical differences: high versus low: *P < 0·05, **P < 0·01. PB and PE were cultured for 18 h with or without Mycobacterium tuberculosis (Mtb). CD107a surface expression was determined on total γδT cells (c) or γδTCRhigh and γδTCRlow (d) subpopulations. Results are expressed as percentage of positive cells. Statistical differences: PB versus PE, †P < 0·05; C versus Mtb or high versus low *P < 0·05.