Figure 2. The effect of carnosine, aspirin, and a combination of both eye drops on water intake of each rat per day in various groups, as a function of time, indicating that the water intake in all the diabetic groups increased more than that in the normal group although the normal group's water intake also increased due to its growth. Panel A was the normal control group, panel B was the diabetic rats untreated group, panel C was the diabetic rats treated with carnosine eye drops (1% only) group, panel D was the diabetic rats treated with aspirin eye drops (0.05% only) group, and panel E was the diabetic rats treated alternately with carnosine (1%) and aspirin (0.05%) eye drops group.