Within 4 or 5 days before you receive your T cell infusion, you will receive 1 of 3 different FDA approved, standard combinations of chemotherapy, chosen by your doctor for you. These combinations are each given over 2-3 days, and must be completed before you receive your T cells. The days before you receive your T cells will be referred to as negative days (for example, 5 days before you receive your T cells will be called Day -5). The drug combinations are known as FCR, FBR, and BR.