Abstract
The surface charge of human erythrocytes and its variations in different experimental conditions were analysed by a Laser-Doppler velocimetry technique. The mean electrophoretic mobility of human erythrocytes was determined in relation to the suspending medium in which ionic strength, pH and viscosity varied. The influence of some proteolytic enzymes (bromelase, neuraminidase) as well as that of AIHA auto-antibodies on electrophoretic mobility was assessed according to the principal known variables (duration of enzymatic treatment, enzyme concentration and type of antibody). The results are discussed with reference to those previously obtained by optical velocimetry.
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