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J. Virol., 03 1995, 1955-1958, Vol 69, No. 3
JP Coutelier, J Van Broeck and SF Wolf
Interleukin-12 is a lymphokine that triggers gamma interferon secretion by
various cells and differentiation of T-helper lymphocytes towards the Th1
subtype. Since viruses are potent inducers of gamma interferon production
and elicit immune responses most probably mediated by Th1 cells, like
B-cell immunoglobulin G2a secretion, we analyzed interleukin-12 message
expression after infection of mice with lactate dehydrogenase-elevating
virus, mouse hepatitis virus, and mouse adenovirus. Our results indicated
that the message for the p40 component of interleukin-12 was transiently
increased shortly after infection. Interleukin-12 was expressed mainly by
macrophages. Therefore, production of interleukin-12 might constitute the
initial event that would determine the subsequent characteristics of the
immune response elicited by viral infections.
Copyright © 1995, American Society for Microbiology
Interleukin-12 gene expression after viral infection in the mouse
Unit of Experimental Medicine, Catholic University of Louvain, Brussels, Belgium.
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