The cells will then be injected by IV over 10 minutes. The patients may be pre-treated with acetaminophen (Tylenol) and diphenhydramine (Benadryl). Acetaminophen (Tylenol) and diphenhydramine (Benadryl) are given to prevent a possible allergic reaction to the T cell administration. Initially, two doses of T cells will be given two weeks apart. If after the second infusion there is a reduction in the size of the patient's lymphoma on CT or MRI scan as assessed by a radiologist, the patient can receive up to six (6) additional doses of the T cells at monthly intervals if they wish.