Blood brain barrier; tight junctions - EM

This is an electron microscopic image. Freeze fracture morphology of blood-brain-barrier of tight junctions.

Image courtesy of Wikimedia Commons and Hartwig Wolburg. This file is licensed under the Creative Commons Attribution ShareAlike 2.5 License. In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it only under a license identical to this one.