Antigen-Presenting Cells/immunology; Immune Tolerance; Membrane Proteins/metabolism; Nerve Tissue Proteins/metabolism; Toll-Like Receptor 2/metabolism; Zymosan/pharmacology; Animals; Cell Proliferation; Cells, Cultured; Cytokines/metabolism; Dendritic Cells/immunology; Dendritic Cells/metabolism; Extracellular Signal-Regulated MAP Kinases/metabolism; Fluorescent Antibody Technique; Humans; Inflammation/immunology; Inflammation/metabolism; Interleukin-10/metabolism; Interleukin-12/metabolism; Interleukin-6/metabolism; Lectins, C-Type; Lipopolysaccharides/administration & dosage; Lipopolysaccharides/metabolism; Lipopolysaccharides/pharmacology; Macrophages/immunology; Macrophages/metabolism; Mice; Mice, Inbred C57BL; Mice, Knockout; Mice, Transgenic; Models, Biological; Proto-Oncogene Proteins c-fos/metabolism; Spleen; Time Factors; Transforming Growth Factor beta/metabolism; Tumor Necrosis Factor-alpha/metabolism; Yeasts/metabolism; Zymosan/administration & dosage; Zymosan/metabolism