Nano Archive

Microfluidic aqueous two phase system for leukocyte concentration from whole blood

SooHoo, Jeffrey R. and Walker, Glenn M. (2009) Microfluidic aqueous two phase system for leukocyte concentration from whole blood. Biomedical Microdevices, 11 (2). pp. 323-329.

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Official URL: http://www.springerlink.com/content/c401066701737l...

Abstract

Leukocytes from a whole blood sample were concentrated using a microfluidic aqueous two phase system (μATPS). Whole blood was simultaneously exposed to polyethylene glycol (PEG) and dextran (Dex) phase streams and cells were partitioned based on their differential affinity for the streams. The laminar flow characteristic of microfluidic devices was used to create zero, one, and two stable interfaces between the polymer streams. Three different patterns of three polymer streams each were evaluated for their effectiveness in concentrating leukocytes: immiscible PEG-PEG-Dex, immiscible Dex-PEG-Dex, and miscible PEG-PBS-Dex. The most effective configuration was the Dex-PEG-Dex stream pattern which on average increased the ratio of leukocytes to erythrocytes by a factor of 9.13 over unconcentrated blood.

Item Type:Article
Uncontrolled Keywords:Microfluidics - Leukocyte - Aqueous two phase separation - Blood - PEG - Dex
Subjects:Biomedical Science > Nanoscale biological processes
ID Code:4321
Deposited By:Lesley Tobin
Deposited On:10 Jun 2009 14:29
Last Modified:10 Jun 2009 14:30

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