In this Issue.

This section presents abstracts of research papers related to neurochemistry, including "Selective Up-regulation of Functional mu-opioid Receptor Splice Variants by Chronic Opioids," "Acute Selective Serotonin Reuptake Inhibitors Regulate the Dorsal Raphe Nucleus Causing Amplification of Terminal Serotonin Release" and "Docosahexaeonic Acid (DHA) Prevents Corticosterone-Induced Changes in Astrocyte Morphology and Function".