3D villi (IMAGE)

University of California - San Francisco

3D villi

Caption

A 3D view inside the small intestine showing its finger-like projections called villi. Red cells release serotonin, a chemical messenger that triggers sensations like nausea. Yellow fibers are nerve endings that detect these signals and send them to the brain.

Credit

Koki Tohara/UCSF

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For media use only

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