The effect of nondamaging intensity laser irradiation on the immune system

Data on in vitro studies of the effect of nondamaging laser irradiation on peripheral blood lymphoid cells of donors and cancer patients are reported including the results of experimental investigations carried out in patients with breast cancer and malignant melanoma. Laser irradiation is demonstrated to potentiate the immunological parameters both in healthy individuals and patients, the effect being more marked in cancer patients. A different action of red and blue laser irradiation on the immune system was revealed. The evidence obtained may be useful in working out the immunotherapeutic methods in cancer management.