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Human BodySurprise 5/5Difficulty 4/5Reviewed on September 13, 2026

A network of microchannels has been discovered in the human skull that may play a crucial role in brain health.

Why it is true

A CSIC team described a network of tiny channels on the inner surface of the skull that connects bone marrow to the brain's vascular and immune systems. This discovery could help understand neurological diseases and pave the way for new treatments.

Source: CSIC

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