collateral circulation

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collateral circulation

[kə¦lad·ə·rəl ‚sər·kyə′lā·shən]
(physiology)
The circulation established for an organ or a part of an organ through the intercommunication of blood vessels when the original direct blood supply is obstructed or abolished.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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