This figure shows the process of manufacturing autologous CD3/CD28 activated T cells transduced with retroviral vectors. On day zero, T cells are activated. Interleukin 7 and Interleukin 15 are added to the activated T cells on day 1. The T cells undergo transduction with retroviral vectors on Day 2 and are then expanded on days 2 through 10. Finally, the T cells are frozen between Days 10 and14.