Figure 3. Phenotypic and proliferative characteristics. (A) Vδ1 T cells expressed NKG2D. (B) CD56 was expressed by a large fraction of Vδ1 T cells, and cells with in vitro anticancer activity were enriched in the CD56^- compartment. Dotted light gray line: isotype control. (C) From day 8 to day 10 of the rapid expansion protocol (REP), undivided cells were 85% of αβ T cells vs. 45% of Vδ1 T cells. Light gray, αβ T cells; dark gray, Vδ1 T cells.