Model of the transcriptional regulation of daf-16. daf-16d/f plays a more prominent role than daf-16a in lifespan regulation. The thickness of the line represents the strength of regulation. ELT-2 and ELT-4 are shown as direct regulators of DAF-16. SWI/SNF is shown as the direct regulator of DAF-16d/f and not DAF-16a.