Figure 1: Aging variations regarding body weight, blood lipid, and blood glucose levels (a) Average body weight changes in the Lean, ZF, and ZDF rats. Significant differences existed between the Lean rats and ZF rats (††: P<0.01) and between the ZF rats and ZDF rats (**: P < 0.01). (b) Average blood triglyceride level changes in the Lean, ZF, and ZDF rats. Significant differences existed between the Lean rats and ZF rats or between the Lean rats and ZDF rats (†: P<0.05; ††: P<0.01, respectively), as well as between the ZF rats and ZDF rats (**: P<0.01). (c) Average blood total cholesterol level changes in the Lean, ZF, and ZDF rats. Significant differences existed between the Lean rats and ZF rats or between the Lean rats and ZDF rats (†: P<0.05; ††: P<0.01, respectively), as well as between the ZF rats and ZDF rats (**: P<0.01). (d) Average blood glucose level changes in the Lean, ZF, and ZDF rats. Significant differences existed between the Lean rats and ZF rats or between the Lean rats and ZDF rats (†: P<0.05; ††: P<0.01, respectively), as well as between the ZF rats and ZDF rats (**: P<0.01).