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Phenotype of porcine monocytic cells: modulation of surface molecule expression upon monocyte differentiation into macrophages



Phenotype of porcine monocytic cells: modulation of surface molecule expression upon monocyte differentiation into macrophages



Veterinary Immunology and Immunopathology 58(3-4): 265-275



When porcine blood monocytes differentiate in vitro into macrophages, their morphology, as well as side scatter and forward scatter measured by flow cytometry, changed in a manner similar to that with human cells. During this differentiation, the initial high expression of CD molecules on porcine monocytes was down-regulated, with one exception--SWC9. Freshly isolated blood monocytes were SWC9-, but after culture the cells had become SWC9+. Thus, porcine monocytes were characterised as SWC3+SWC9-CD14high; macrophages were SWC3+SWC9+CD14low, the latter also displaying a down-regulation of CD11a/18, and, to a lesser degree, CD44. Both SWC9-CD14high monocytes and SWC9+CD14low macrophages were identifiable in freshly prepared monocytic cells from the spleen. Alveolar macrophages, on the other hand, were dominated by SWC9+CD14low cells, similar in phenotype to in vitro monocyte-derived macrophages. The consequences which these results have for studies on virus infections of porcine monocytic cells are discussed.

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Accession: 046973696

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PMID: 9436270


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