A ‘stress vaccine’ may be another step closer, suggests new study. When researchers injected mice with a soil-based bacterium prior to a stressful event, the shots prevented a “PTSD-like syndrome” and diminished stress reactions. Scientists have now identified and synthesized the lipid responsible.

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A ‘stress vaccine’ may be another step closer, suggests new study. When researchers injected mice with a soil-based bacterium prior to a stressful event, the shots prevented a “PTSD-like syndrome” and diminished stress reactions. Scientists have now identified and synthesized the lipid responsible.