5PRATELLI A.Canine Coronavirus in feetion.In:Reeent Advaneesin Can- ine in feetious Diseases[M].L.E.Canniehael (Ed).International Veterinary Information Serviee, 2000.
6TENNANT B J,GASKELL R M ,JONES R C ,et al.Studies on the epiz- ootiology of canine coronavirus [J].Vet Rec, 1993,132( 1 ) :7-11.
7PRATELL1 A, BUONAVOGLIA D, MARTELLA V,et al.Diagnosis of ca- nine coronavirus infection using nested-PCR[J].J Virol Meth, 2000,84 (1):91-94.
8MOCHIZUKI M,SUGIURA R,AKUZAWA M.Micro-neutralzation test with canine coronavirus for detection of coronavirus antibodies in dogs and cats[J].Jon J Vet Sci, 1987.49 (3):563-565.
9WOODS R D,WESLEY R D.Immune response in sows given transm- issible gastroenteritis or canine coronavirus[J].Am J Vet Res, 1986,47 (6) : 1239-1242.