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Mouse brain capillaries, SEM

False-coloured scanning electron micrograph (SEM) of capillaries or microvessels (red/orange/green 3D cylindrical structures) isolated from a mouse brain. Brain microvessels are characterised by the presence of neurovascular units, the building blocks of the blood brain barrier (a protective layer of cells that regulates entry of molecules to the brain). The neurovascular unit is made up of endoth…