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. 2009 Mar 10;51(1):10. doi: 10.1186/1751-0147-51-10

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Copyright © 2009 Edner et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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An illustration of the microdialysis catheter and infusion pump. The microdialysis catheter consists of a 600-mm-long inlet tube, a 90-mm-long double-lumen tube, and a 220-mm-long outlet tube to which the microvial is fastened. The double-lumen tube has a 60-mm-long shaft (0.9 mm in diameter) and a 30-mm tip (0.6 mm in diameter) where the outer layer consists of a polyamide dialysis membrane. The perfusate enters the catheter between the inner tubing and the outer dialysis membrane, allowing for the process of dialysis, the dialysate is subsequently transported away inside the inner tube to be collected in the microvial. The illustration was published with kind permission of CMA/Microdialysis AB, Solna, Sweden.