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Dielectric Relaxation in Biological SystemsPhysical Principles, Methods, and Applications$
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Valerica Raicu and Yuri Feldman

Print publication date: 2015

Print ISBN-13: 9780199686513

Published to Oxford Scholarship Online: August 2015

DOI: 10.1093/acprof:oso/9780199686513.001.0001

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Dielectric Properties of Blood and Blood Components

Dielectric Properties of Blood and Blood Components

(p.363) 3.7 Dielectric Properties of Blood and Blood Components
Dielectric Relaxation in Biological Systems

Yoshihito Hayashi

Koji Asami

Oxford University Press

An overview of dielectric spectroscopy (DS) studies for erythrocytes, blood coagulation, and leukocytes is provided. Cell suspensions and whole blood show the main dielectric response in the MHz region due to interfacial polarization, analysis of which provides important information about the morphology and electric properties of the cells. At first, the dielectric signature of erythrocyte morphology is pointed out by comparing four types of erythrocytes with different shapes, such as discocytes, echinocytes, enlarged erythrocytes, and spherocytes. Subsequently, DS application to monitoring the quality of blood during its preservation is summarized. The glucose effects on the dielectric properties of erythrocytes are also presented. Next, studies of erythrocyte aggregation (rouleaux formation) and blood coagulation are introduced. Dielectric blood coagulometry is a very promising method for the evaluation of the blood coagulability. The chapter concludes with a summary of results on dielectric characterizations of normal and malignant leukocytes.

Keywords:   red blood cell, erythrocyte deformation, clot formation, lymphocyte, leukemia cell line, Maxwell–Wagner interfacial polarization, numerical simulation

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