Rats were divided into @ groups ; group @ ( n = @ ) , control group ; group @ ( n = @ ) , axonotmesis + placebo group ; group @ ( n = @ ) , axonotmesis + @ mg/kg agmatine treatment group ; group @ ( n = @ ) , neurotmesis + placebo group ; group @ ( n = @ ) , neurotmesis + @ mg/kg agmatine treatment group .