Animals|Biological Transport|Dimerization|Dose-Response Relationship, Immunologic|Enzyme Activation|Gene Expression Regulation|Humans|I-kappa B Kinase|I-kappa B Proteins|Ligands|NF-KappaB Inhibitor alpha|NF-kappa B|Nonlinear Dynamics|Nuclear Envelope|Signal Transduction|Stochastic Processes|Transcriptional Activation|Tumor Necrosis Factor-alpha