Carrier Proteins/biosynthesis; Lymphocyte Activation; Membrane Glycoproteins/biosynthesis; Receptors, Tumor Necrosis Factor/biosynthesis; T-Lymphocytes/immunology; Tumor Necrosis Factor-alpha/biosynthesis; Animals; Apoptosis/genetics; Apoptosis/immunology; Apoptosis Regulatory Proteins; Breast Neoplasms/immunology; Breast Neoplasms/pathology; Calcium Signaling/immunology; Cricetinae; Cycloheximide/pharmacology; Cytotoxicity, Immunologic; Dexamethasone/pharmacology; Enzyme Activation/immunology; Fas Ligand Protein; Gene Expression Regulation/drug effects; Gene Expression Regulation/immunology; Hybridomas; Kinetics; Ligands; Lymphocyte Activation/drug effects; Lymphocyte Activation/genetics; Membrane Glycoproteins/physiology; Mice; Multigene Family/immunology; Protein Kinase C/metabolism; Protein Synthesis Inhibitors/pharmacology; RANK Ligand; Receptor Activator of Nuclear Factor-kappa B; Receptors, Antigen, T-Cell/physiology; T-Lymphocytes/cytology; T-Lymphocytes/metabolism; TNF-Related Apoptosis-Inducing Ligand; Tumor Cells, Cultured; Tumor Necrosis Factor-alpha/genetics; Tumor Necrosis Factor-alpha/physiology; fas Receptor/biosynthesis; fas Receptor/metabolism