[Changes of peripheral leukenic lymphocytes during radiotherapy and clinical symptoms of indirect radiation effect]

Leukaemic lymphocytes are much more sensitive even to local irradiation than non-leukaemic ones. The substantial drop in the number of lymphocytes id partly due to indirect radio-biological effects. It appears likely that the antigens liberated by the damaged tumour cells under the action of radiation augment immunoreaction thus causing additional pathological cells to be destroyed (radioinduced immune processes).