<qa>  What is the stimulation that trains the T cells to kill EBV infected cells?Ten to sixty ml 2-12 teaspoons of blood will be collected from the patient which we use to grow the T cells. These T cells are then stimulated with EBV infected cells which have been treated with radiation so that they cannot grow. This stimulation trains the T cells to kill EBV infected cells. We then test the T cells to make sure that they kill the EBV infected cells. 