ii. A donation of either a single standard 2 blood volume leukapheresis collected in standard ACD anticoagulant. If it is impossible to collect a leukapheresis from some of the donors, a unit of whole blood will be acceptable. However, the AICTF (Adoptive Immune Cell Therapy Facility manufacturing the clinical grade cell products under GMP conditions in MSKCC) may only be able to generate a limited number of T cells from a unit of blood. This blood is required for isolation of the T cells to be sensitized with the pool of CMVpp65 15-mers loaded on the autologous EBVBLCL, and propagated in vitro. In addition, it is required to provide autologous feeder cells essential to sustain T-cell growth without the risk of stimulating the growth of alloreactive T-cells capable of inducing GVHD.