... in the comet assay may indicate either high damage or an efficient DNA repair system ( Collins et al., 1997 ). The fact that all insects from this treatment survived, even though measured DNA damage parameters (TL, OTM, %TDNA) in the cells were high, shows that this species is equipped with a very efficient...

...) or reduced levels (RQ) of a nutritional supplement (Nutrivit®) rich in antioxidants for 4 weeks. We also assessed differences in take-off escape time, a potential fitness-determining physiological capability. Oxidative stress was measured in two ways: comet assay to measure DNA damage; and analysis...

... into the major cellular compartments (animal cells, algal cells, holobiont entities) by sucrose gradient and then by detergent treatments. Cell fractions were irradiated by UVB lamp (4.05, 8.1 and 12.2 kJ m –2 ) and subjected to the comet assay. UVB radiation, at levels that induced a moderate DNA breakage...