facilitated transport

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facilitated transport

[fə′sil· ə‚tād·əd ′trans‚pȯrt]
(physiology)
The transport of certain materials across a cell membrane, down a concentration gradient, assisted by enzymelike carrier proteins embedded in the membrane and without the explicit provision of energy.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Interestingly, glucose transport occurs through both endothelial cells by facilitated diffusion and by GLUT 1 and GLUT 3 transporters [44, 45] present on the surface of neurons and endothelial cells.
(9) In active lesions a central core of facilitated diffusion often exists with a rim of diffusion restriction at the advancing edge which is typically incomplete.
Describe the mechanisms employed by cells to transport materials across membranes: simple diffusion, diffusion through channels, facilitated diffusion, and active transport.

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