Both overlapping and independent mechanisms determine how diet and insulin-ligand knockouts extend lifespan of Drosophila melanogaster

Lifespan curves for dilp2-3,5 mutant (blue) and control flies (red) for all nine food types. On each row the lifespan response to one level of dietary yeast is shown for three different levels of sugar (50, 100 and 200 g？l？1, respectively