Figure 2. Increased dSir2 expression extends life span dose-dependently. (A) Median life span change (shown as % of control) is plotted as a function of dSir2 expression levels for life span experiments described in this study and in previous reports. (B) A finer view of x-axis dSir2 levels below 12-fold is shown. For all figures, previously published life spans are shown as open data points [