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Macrophages coexpress both the interleukin (IL)-2R-gamma chain (γc) and IL-13R-alpha 1. These receptor chains can heterodimerize with IL-4Rα to form type I or type II IL-4 receptor complexes, respectively. We used macrophages derived from Il2rg and Il13ra1 knockout (KO) mice to evaluate the requirements for these receptor chains for induction of the alternative macrophage activation (AMA) pathway...
Eosinophilia in blood and tissues has been strongly associated with helminth infections for over a century. In vivo depletion of IL-5, a cytokine crucially involved in eosinophilopoiesis with an antibody or through genetic manipulation, reproducibly abrogates helminth-induced eosinophilia, but renders mice permissive only in some models of parasite infection. In the current study, we compared the...
Complexes of the heat shock protein gp96 and antigenic peptides are taken up by antigen-presenting cells and presented by MHC class I molecules. In order to explain the unusual efficiency of this process, the uptake of gp96 had been postulated to occur through a receptor, identified recently as CD91. We show here that complexes of peptides with heat shock proteins hsp90, calreticulin, and hsp70 are...
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