Investigation of immunoglobulins, circulating immune complexes and plasma free hemoglobin in cancer patients on 60Co gamma-ray therapy.

32 patients with different tumours were irradiated by 60Co gamma-rays. During therapy lasting for several weeks, changes in the content of immunoglobulin and of some other serum proteins, circulating immune complexes and plasma free hemoglobin were determined. Immunosuppression according to immunoglobulin content in serum was not produced by this type of radiation. Decrease in immune complex levels was a good prognostic sign. Low values of plasma hemoglobin content during treatment indicated that no erythrocyte membrane damage had been effected.