Volume 14 Issue 5, May 2009

Behavioural response and immunological response meet in the junction between the brain and the body to create behavioural immunization. Psychological stress induces an increase of brain surveillance by lymphocytes. Exposure of mice to a predator odour enhances lymphocytes trafficking to the Choroid plexus. The increase T-cell trafficking, amenable to boosting by active immunization, relates the ability to cope with the psychological stress. A representative image of T cells in the Choroid plexus. For more information on this topic, please refer to the article by Lewitus and Schwartz on pages 532-536.