Journal
PARASITE IMMUNOLOGY
Volume 25, Issue 4, Pages 185-188Publisher
BLACKWELL PUBLISHING LTD
DOI: 10.1046/j.1365-3024.2003.00625.x
Keywords
Babesia bovis; type-1 immunity; innate immunity; NK cells
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The innate immune response to Babesia bovis infection in cattle is age-related, spleen-dependent and, in stabilate inoculated calves, has type-1 characteristics, including the early induction of IL-12 and IFN-gamma. In this study with three calves, parameters of innate immunity were followed for 2 weeks after tick transmission of B. bovis. Each calf survived the acute disease episode without drug intervention, and responded with increased levels of plasma interferon-gamma and type-1 cytokine expression, monocyte/macrophage activation, and CD8(+) cellular proliferation in the spleen. The proliferating CD8(+) population consisted primarily of NK-like cells, and the expansion occurred in parallel with an increase in IL-15 mRNA expression in the spleen.
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