Up-regulation of GFP in T-cell clone 84 after stimulation with JY target cells.

T cells of W.B.O. clone 84, which is noncytolytic and nonproliferative toward JY cells, were incubated in medium alone, or together with autologous EBV-B cells or with JY cells. Shown is the up-regulation of GFP after an overnight incubation. Gates were set to exclude CD20⁺ B cells.