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Virus Res. 1997 Oct;51(2):105-13.

Porcine reproductive and respiratory syndrome virus infection of gnotobiotic pigs: sites of virus replication and co-localization with MAC-387 staining at 21 days post-infection.

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  • 1Department of Biology-Microbiology, South Dakota State University, Brookings 57007, USA.

Abstract

The organ distribution of PRRSV-infected cells in gnotobiotic piglets at 21 days after infection with PRRSV isolate VR-2332 was examined by in situ hybridization. Cells that expressed PRRSV RNA were identified in all tissues examined, including organs not usually characterized as sites of PRRSV infection. PRRSV-infected cells frequently appeared in clusters and were not always associated with microscopic lesions. The expression of PRRSV RNA co-localized with a macrophage monoclonal antibody, MAC-387, in lymph nodes. Some, but not all infected cells stained with MAC-387. The wide distribution of PRRSV-infected cells and co-localization with MAC-387 staining is consistent with the macrophage-tropism of PRRSV and is similar to observations made during persistent infection with other arteriviruses.

PMID:
9498609
[PubMed - indexed for MEDLINE]
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