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The immune responses to many infections have long been known to share features with autoimmune responses. In particular, both types of response are typified by the enhanced reactivity of T helper 1 cells - with high levels of interleukin-2, interferon γ and tumor necrosis factor α - and are accompanied often by organ-specific and/or systemic damage and the production of IgG. Paradoxically, the geographical...
Research into the biology of dendritic cells (DCs) has shown that they play a central role in priming early and late immune responses. The recent finding that DCs produce interleukin-2 (IL-2) after microbial challenge suggests that this could be the mechanism by which DCs link innate and adaptive immunity. This hypothesis is supported also by the observation that murine cytomegalovirus, which is able...
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