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Publikováno v:
Canadian journal of veterinary research = Revue canadienne de recherche veterinaire. 58(2)
A procedure was developed for the partial purification of the rat coronaviruses, sialodacryoadenitis virus (SDAV) and Parker's rat coronavirus (PRC). The SDAV and PRC were replicated in L-2 cell monolayer cultures, precipitated with ammonium sulphate