(A) MEN Vmax from crosses of the EP(3)0517 excision series. Crosses were expected to generate three different activity classes: “0%,” “50%,” and “100%.” The 0% and 100% groups are significantly different. The 50% flies show significantly greater 50% activity, but are significantly lower in activity than the 100% flies. Error bars indicate one standard error. (B–D) Graphs of triglyceride concentration (micrograms per microgram protein), G6PD activity, and IDH activity, respectively, against Men activity (10,000 × μm NADPH/min/μg protein).