1J.Sambrook,et al.Molecular Cloning (second Edition),cold spring harbor laboratony,1989.
2Sobsey MD et al.Impnoved methods for detecting enteric viuses in Oysters.Appil Environ Microbiol 1978:36(1):121-128.
3Johnson KM,et al.Pnocedure for recouery of enterouirues from the Japanese Cockle Tapes jponicq.Appl Environ Mienobiol 1981:41:932-935.
4Ticehurst JR,et al.Detection of hepatitis Avirus by exeraction of viral RNA and molocuar hybridization J Chin Microbiol.25(10):1987:1822-1829.
5Troxler M,etal.In sitm hyharidzatioy for ligth and electronmicroscopy:a comparision of methods for the localization of viral RNAusing biotinglated DNA and RNA probe Jvirol methods,1990:30(1):1-14.
6Henehal EA et al.J Virol Methods:1989:15(2):187-20.
