In experiment group ,if the blood glucose turns to negative, inject alloxanate(100mg/kg)through ear-edge vein.To keep the hyperglycaemia to the termination.

• 每周测血糖一次，在实验过程中如有血糖转阴性则按上述方法给予四氧嘧啶100mg/kg耳缘静脉注射，使高血糖能够维持至实验结束。