Bacterial infection early in life protects against stressor-induced depressive-like symptoms in adult rats.
Bilbo SD, Yirmiya R, Amat J, Paul ED, Watkins LR, Maier SF. Bacterial infection early in life protects against stressor-induced depressive-like symptoms in adult rats. Psychoneuroendocrinology. 2008 Apr; 33(3):261-9.