Targeting the Brain’s Immune System: A Psychopharmacological Approach to Central Nervous System Infections.- Model Systems for Assessing Cognitive Function: Implications for HIV-1 Infection and Drugs of Abuse.- Direct and Indirect Mechanisms of HIV-1 Neuropathogenesis in the Human Central Nervous System.- Chemokine Receptors on Brain Endothelia - Keys to HIV-1 Neuroinvasion?.- Neurotrophic Factor Regulation of Human Immunodeficiency Virus Type 1 Replication in Human Blood-derived Macrophages Through Modulation of Coreceptor Expression.- Direct vs. Indirect Modulation of Complex IN VITRO Human Retroviral Infections by Morphine.- Genetic Factors Involved in Central Nervous System/Immune Interactions.- Interactions of Opioid Receptors, Chemokines, and Chemokine Receptors.- Crosstalk Between Chemokine and Opioid Receptors Results in Downmodulation of Cell Migration.- Morphine Upregulates Kappa-opioid Receptors of Human Lymphocytes.- Effects of Morphine on T-cell Recirculation in Rhesus Monkeys.- Mitogen - Induced Activation of Mouse T Cells Increases Kappa Opioid Receptor Expression.- Self-enhancement of Phagocytosis by Murine Resident Peritoneal Macrophages and its Relationship to Morphine Effects on the Process.- Role of Mu-opioid Receptor in Immune Function.- Opiates Promote T Cell Apoptosis Through JNK and Caspase Pathway.- Role of Beta-endorphin in the Modulation of Immune Responses: Perspectives in Autoimmune Diseases.- Modulation of Fas/Fasl in a Murine Retroviral Infection by AZT and Methionine Enkephalin.- Acute Effects of Heroin on the Cellularity of the Spleen and the Apoptosis of Splenic Leukocytes.- Alteration of Early T Cell Development by Opioid and Superantigen Stimulation.- Effect of Opioids on Oral Salmonella Infection and Immune Function.- AlteredT-cell Responsiveness in Morphine “Tolerant” Rats: Evidence for a Potential Role of the Paraventricular Nucleus of the Hypothalamus.- Actions of Endotoxin and Morphine.- Pharmaconeuroimmunology in the Intestinal Tract: Opioid and Cannabinoid Receptors, Enteric Neurons and Mucosal Defense.- Cannabinoid-mediated Inhibition of Inducible Nitric Oxide Production by Rat Microglial Cells: Evidence for CB1 Receptor Participation.- Modulation of CB1 mRNA upon Activation of Murine Splenocytes.- Downregulation of Cannabinoid Receptor 2 (CB2) Messenger RNA Expression During In Vitro Stimulation of Murine Splenocytes with Lipopolysaccharide.- CB1 and CB2 Receptor mRNA Expression in Human Peripheral Blood Mononuclear Cells (PBMC) from Various Donor Types.- Effect of Cocaine on Chemokine and CCR- 5 Gene Expression by Mononuclear Cells from Normal Donors and HIV-1 Infected Patients.- Intravenous Cocaine Abuse: A Rodent Model for Potential Interactions with HIV Proteins.- Substance P Receptor Mediated Macrophage Responses.- Lymphocyte Modulation by Seven Transmembrane Receptors: A Brief Review of Session 1.- Neuroaids: Retroviral Pathology and Drugs of Abuse.- The Effects of Drugs and Neuropeptides on Immunomodulation and Opportunistic Infection: Summary of Symposium 2.