Blood was collected from the tail vein once a week and the levels of glucose, insulin, C peptide, TG, TC, HDL, and LDL in serum were measured.

• 每周末采集尾静脉血 ,测定血糖、总胆固醇 (TC)、甘油三酯 (TG)、低密度脂蛋白 (LDL)、高密度脂蛋白 (HDL )、胰岛素、C肽的含量。