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Cytogenetic effects of fractionated or unfractionated X-ray exposures to mouse spermatogonia
Ist Teil von
Mutation research, 1980-08, Vol.72 (3), p.423
Ort / Verlag
Netherlands
Erscheinungsjahr
1980
Link zum Volltext
Beschreibungen/Notizen
The induction of chromosomal aberrations in mouse spermatogonia was studied, after single (50 and 100 rad) and fractionated doses (50 / 50 rad spaced 24 h apart), a short time after irradiation, by analysis of mitotic stages. From 17 to 21 h after the second fraction of the dose, the recorded frequencies of chromosomal deletions and exchanges were fully additive when compared with single "control" doses. Thus there was no suggestion of any sensitization effect of the first exposure. Possible reasons for this are discussed.