Shining a light on the hidden damage of mild

<p>We all know someone who&#39;s had a head injury that was &quot;only&quot; a concussion, but even mild traumatic brain injuries can cause lasting damage, and the vast majority are never diagnosed. A team led by Samir Mitragotri at the Wyss Institute, Harvard SEAS, and Boston Children&#39;s Hospital&nbsp;created a way to diagnose mild TBIs (mTBIs) even when MRI scans showed nothing, using the body&#39;s own immune cells called macrophages. They attached microparticle &quot;backpacks&quot; containing a common MRI contrast agent to the cells, which migrated to the brain and allowed them to see evidence of inflammation in pigs with a mock mTBI.</p>

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