Finally, we tested the effects of dietary restriction on longevity
of those flies (Partridge et al., 2005) (Figures S7J and S7K). We
found that dietary restriction could extend both the median survival
and the maximum lifespan of all genotypes (Figures S7J and
S7K). Interestingly, dietary restricted flies with three copies of the
gene azot showed a further increase in maximum lifespan of 35%
(Figure S7K). This shows that dietary restriction and elimination
of unfit cells can be combined to maximize lifespan