Translated abstract:
Aim of this study was to differentiate DNA-double-strand-breaks from DNA-single-strand-breaks on a single cell level, using the comet assay after alpha- and gamma-irradiation. Americium-241 was used as a alpha-irradiation-source, Caesium-137 was used for gamma-irradiation. Because of technical problems with both the neutral and alkaline comet assay after irradiation of gastric cancer cells and human lymphocytes, no definite differentiation of DNA-damage was possible.