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Vaccination may prove to be a powerful adjunct therapy for treating drug addiction, but more studies are needed to determine its ultimate value (page 1129–1132).
Neuroimaging of monozygotic twins with Tourette syndrome suggests that increased binding by dopamine D2 receptors contributes to the disease phenotype.
Recent studies on osteoclast apoptosis and TGF-β gene regulation provide new insights into the mechanisms by which estrogens and their analogues inhibit bone resorption (pages 1132–1136).