8LambertLA.,WamerWG.,Wei RR,et al.The protective but nonsynegistic effect of dietary B-Carotene and vitamin Eon skin tumorigenesis in skhmice[J].Nutrition and Cancer,1994,21(1);1.
9Binn LN,Marchwicki RH,Eckermann EH,Fritz TE.Viral antibody studies of laboratory dogs with diarrheal disease.Am J Vet Res 1981;42(10):1665-7.