Effects of Low-Dose Radiation on Repair Processes in Human Lymphocytes

Abstract

DNA excision repair was investigated in lymphocytes of persons occupationally exposed to low-dose radiation from 222Rn. Autoradiographic studies of unscheduled DNA synthesis and measurement of [3H]-thymidine incorporation by repair replication into double-stranded and single-strand-containing DNA fractions obtained by BND cellulose chromatography seem to indicate a stimulator effect of repeated low-dose irradiation on repair enzymes.