Abstract
The RBE of alpha -particles in different mutations of Chinese hamster cells was determined with the aim of identifying differences in the sensitivity to x-ray and alpha -particle-induced DNA damage. Two parental lines of Chinese hamster cells and four radiosensitive mutants were irradiated with different single doses of x-rays and alpha -particles and clonogenic cell survival was determined. Radiosensitivity to x-rays varied by a factor of 5 between the cell strains whereas sensitivity to alpha -particle irradiation was almost identical among all strains. The RBE is only determined by the sensitivity of the cells towards x-rays. Since cells with different defects of repair or cell cycle control have different radiosensitivities, we conclude that the effects of x-ray irradiation and the RBE are mostly determined by the activity of repair processes.
| Original language | English |
|---|---|
| Pages (from-to) | 243-248 |
| Number of pages | 6 |
| Journal | Radiation and Environmental Biophysics |
| Volume | 40 |
| Issue number | 3 |
| Publication status | Published - 2001 |
ASJC Scopus subject areas
- Agricultural and Biological Sciences (miscellaneous)
- Biophysics
- General Environmental Science
- Environmental Science (miscellaneous)
- Environmental Chemistry
- Radiology Nuclear Medicine and imaging
- Physics and Astronomy (miscellaneous)
- Radiation