The proliferative expansion of γδ T cells induced by iDC^Zol+ is dependent on the mevalonate pathway. Total counts of viable γδ and αβ T cells after stimulation with iDC^Zol−, iDC^Zol+, and iDC^Zol+Mev+. The former only are significantly increased by iDC^Zol+ stimulation (see also Figure 2B). This increase is blunted by blocking the mevalonate pathway with Mev (iDC^Zol+ 76 000 ± 14 000; iDC^{Zol + Mev+} 33 000 ± 18 000; P < .02). Mev treatment does not affect αβ T-cell counts. Error bars represent mean ± SEM.