9[11]Gulcin I,Buyukokuroglu M E,Oktay M,etal.On the invitro an-tioxidative properties of melatonin.J Pineal Res,2002,33(3):167-170.
10[12]OhtaY,KongoM,KishikawaT.Effect of melatonin on changes in hepatic antioxidant enzyme activities in rats treated with alpha-naphthy lisoth iocyanate.J Pineal Res,2001,31(4):370-375.