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Immunization with bacteria promotes stress resilience, coping behaviors in mice

Injections of the soil bacterium Mycobacterium vaccae promote stress resilience and improve coping behaviors in mice, according to a new study led by researchers at University of California San Diego School of Medicine and University of Colorado Boulder. The researchers also found that M. vaccae prevented stress-induced colitis, a typical symptom of inflammatory bowel disease, suggesting that immunization with the bacteria may have wide-ranging health benefits.

Mycobacterium vaccae
This is Mycobacterium vaccae.
Credit:Photo by Christopher Lowry