Table 1. Average body weight, blood glucose concentration, and cataract prevalence in SE- or EE-housing animals.

Average of body weight (g)				Average of blood glucose concentration (mg/dl)
Time After vehicle or STZ injection	Control	Diabetes+SE	Diabetes+EE	Control	Diabetes+SE	Diabetes+EE
0 days	352±6	355±9	358±9	113±8	115±11	119±10
3 weeks	411±14	357±13a	353±13a	112±4	508±22b	504±16b
7 weeks	481±17	369±12b	374±9b	118±4	585±10b	592±7b
10 weeks	517±11	371±19b	388±22b	114±3	566±20b	584±16b

Body weight and blood glucose levels in vehicle- or STZ-injected animals at different time points. STZ induced a significant decrease in body weight and an increase in blood glucose levels, which did not differ between SE- and EE-housed animals at all time points examined. Cataract occurrence was similar in both diabetic groups. Data are mean ± SEM (n = 10 animals per group).

^a: p<0.05,

^b: p<0.01 vs. aged-matched control animals, by Tukey's test.