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Newly Found 'Immune Organ' Inside Skull Directs Brain Defense

The structures acted as rapid first responders against glioblastoma in mice, and a scalp-applied gel boosted tumor-fighting immune responses, researchers said.

Summary by Medical Xpress
Researchers at Washington University School of Medicine in St. Louis have discovered lymph node-like structures in the skull bone marrow of mice for the first time and demonstrated that they act as rapid first responders against brain cancer before distant lymph nodes get the signal that abnormal cells are present. The researchers also found evidence of similar immune cells in human skull bone marrow.

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Researchers have discovered in the bone mice' skull an unknown immune structure that can function as a local brain protection center and may also exist in humans.

·Kyiv, Ukraine
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A new study published in the journal Nature has revealed the discovery of a brand-new organ inside the human skull that manages brain-specific immune responses. There is strong evidence that these structures, currently only identified in mice, also exist in humans. According to experts, if these structures can be strengthened, the medical world will have gained a new weapon against deadly brain cancers.

·Beyoğlu, Türkiye
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Medical Xpress broke the news in Douglas, United Kingdom on Wednesday, August 19, 2026.
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