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    Proc Natl Acad Sci U S A. 1991 Feb 15;88(4):1172-6.

    Isolation and expression of human cytokine synthesis inhibitory factor cDNA clones: homology to Epstein-Barr virus open reading frame BCRFI.

    Source

    Department of Immunology, DNAX Research Institute of Molecular and Cellular Biology, Palo Alto, CA 94304.

    Abstract

    We have demonstrated the existence of human cytokine synthesis inhibitory factor (CSIF) [interleukin 10 (IL-10)]. cDNA clones encoding human IL-10 (hIL-10) were isolated from a tetanus toxin-specific human T-cell clone. Like mouse IL-10, hIL-10 exhibits strong DNA and amino acid sequence homology to an open reading frame in the Epstein-Barr virus, BCRFI. hIL-10 and the BCRFI product inhibit cytokine synthesis by activated human peripheral blood mononuclear cells and by a mouse Th1 clone. Both hIL-10 and mouse IL-10 sustain the viability of a mouse mast cell line in culture, but BCRFI lacks comparable activity in this assay, suggesting that BCRFI may have conserved only a subset of hIL-10 activities.

    PMID:
    1847510
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC50979
    Free PMC Article

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