Anti-Inflammatory Agents/pharmacology; Biological Products/pharmacology; Laminaria/chemistry; Macrophages/drug effects; NF-kappa B/antagonists & inhibitors; Signal Transduction/drug effects; Animals; Cell Line, Tumor; Chromatography, Reverse-Phase; Cyclooxygenase 2/genetics; Cyclooxygenase 2/metabolism; Cytokines/analysis; Cytokines/metabolism; Gene Expression Regulation; Hexanes; I-kappa B Proteins/genetics; I-kappa B Proteins/metabolism; Lipopolysaccharides/metabolism; Macrophages/cytology; Magnetic Resonance Spectroscopy/methods; Mice; Mitogen-Activated Protein Kinases/antagonists & inhibitors; Mitogen-Activated Protein Kinases/metabolism; NF-KappaB Inhibitor alpha; NF-kappa B/genetics; NF-kappa B/metabolism; Nitric Oxide/antagonists & inhibitors; Nitric Oxide/biosynthesis; Nitric Oxide Synthase Type II/genetics; Nitric Oxide Synthase Type II/metabolism; Xanthophylls/pharmacology