Figure 1: Effect of cerebrolysin (5 mg kg day-1, ip, for 2 weeks) on the pain threshold values in streptozotocin-injected diabetic rats subjected to tail flick. *P<0.05, **P<0.01 and ***P<0.001 as compared to control group. There are no significance effects between cerebrolysin-treated and diabetic groups. Values are expressed as mean ± SEM. (n=8 rats in each group).