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Vet Res. 2000 Jan-Feb;31(1):11-21.

PRRSV, the virus.

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  • 1Department of Virology, Institute for animal science and health (ID-DLO), Lelystad, The Netherlands. J.J.M.Meulenberg@id.dlo.nl


Porcine reproductive and respiratory syndrome virus (PRRSV) is a positive-strand RNA virus that belongs to the Arteriviridae family. PRRSV grows in primary alveolar macrophages and in monkey kidney cell lines. The genomic RNA is approximately 15 kb. The genome encodes the RNA replicase (ORF1a and ORF1b), the glycoproteins GP2 to GP5, the integral membrane protein M, and the nucleocapsid protein N (ORFs 2 to 7). A comparison of nucleotide sequences of different strains indicates that European and North American strains represent two distinct antigenic types. Various PRRSV-specific monoclonal antibodies and recombinant structural proteins have been produced. Well-defined PRRSV mutants can be generated with the recently developed infectious cDNA clone of PRRSV.

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