Sister-chromatid exchanges in radiodiagnostic unit technicians

Sister chromatid exchanges [SCE] were performed on blood lymphocytes from 23 radiodiagnostic unit technicians and 20 healthy unexposed controls. The SCE frequencies were increased significantly in smoking radiodiagnostic unit technicians as compared to non-smoking radiodiagnostic unit technicians [p>0.0001]. There was no difference in the SCE rate between smoking radiodiagnostic unit technicians and smoking controls [p>0.05]. The difference between the SCE frequencies of non-smoking exposed subjects and non-smoking controls was not found significant [p>0.05]