Abstract: Chronic lymphocytic leukemia (CLL) in a patient is treated by administering to the patient oxidatively stressed CLL cells. The CLL cells are oxidatively stressed extracorporeally, e.g. by subjection to oxygen/ozone mixtures, and preferably are simultaneously subjected to other stressors such as UV light. Preferably also, the CLL cells are autologous, and are contained in an aliquot of the patient's blood at the time of subjection to stressing.

Abstract: Chronic lymphocytic leukemia (CLL) in a patient is treated by administering to the patient oxidatively stressed CLL cells. The CLL cells are oxidatively stressed extracorporeally, e.g. by subjection to oxygen/ozone mixtures, and preferably are simultaneously subjected to other stressors such as UV light. Preferably also, the CLL cells are autologous, and are contained in an aliquot of the patient's blood at the time of subjection to stressing.

Abstract: The development of graft versus host disease in a mammalian patient undergoing cell transplantation therapy for treatment of a bone marrow mediated disease, is prevented or alleviated by subjecting at least the T-cells of the allogeneic cell transplantation composition, extracorporeally, to oxidative stress, in appropriate dosage amounts, such as bubbling a gaseous mixture of ozone and oxygen through a suspension of the T-cells. The process may also include irradiation of the cells with UV light, simultaneously with the application of the oxidative stress. The oxidative stress induces reduced inflammatory cytokine production and a reduced proliferative response in the T-cells.