1887

Abstract

Long-surviving cultures of non-adherent cells of the monocyte-macrophage lineage were established from the bone marrow and blood of weanling pigs by culturing cells from these tissues in the presence of recombinant procine granulocyte-macrophage colony stimulating factor (GM-CSF). The cells increased in number, principally during the first 4 weeks of culture, bound monoclonal antibodies recognizing porcine macrophage antigens and avidly phagocytosed latex particles. The GM-CSF generated mononuclear phagocytes were highly infectable with a virulent Malawi isolate of African swine fever virus (ASFV) and able to generate levels of virus progeny similar to those produced by freshly isolated pig macrophages. The cultured cells retained their susceptibility to ASFV infection for as long as the cultures survived i.e. for up to 3 months.

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1996-10-01
2022-09-25
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