The Sedimentation Rate of Free Erythrocytes and Their Associates, the Influence of a Standing Ultrasonic Wave

Digital Processing Techniques Influence on Resolution of Acousto-Optical Blood Typing Method

“…To an extent this sample is an equivalent of the case of erythrocytes agglutination negative reaction. Introduction of such test is determined by desire to improve reliability of blood typing, that is one of the principal differences of this work from [15,20] and others. Indeed, for blood typing of the examined blood sample with three experiments carrying out with US exposure to the samples, only one of them is a priori known as the one without agglutination reaction.…”

“…At the same time at negative reaction the ultrasound turning off results in destruction of RBC (red blood cell) of aggregates, while small aggregates and free erythrocytes slowly sedimentate. In [15] it is experimentally showed, that at ultrasonic exposure the agglutinates sedimentation rate at positive reaction exceeds the aggregates sedimentation rate at negative reaction by more than an order. It means, that at some point of time at positive reaction the examined medium becomes transparent almost completely, while at negative reaction it remains turbid.…”

“…It is important to note, that AOM particularly allows to obtain the high resolution, therefore the high certainty of blood typing. Thus, if in the first works of this area [9,10] the resolution varied from single units to several dozens, the development of AOM of blood typing (application of various optical methods of agglutination reaction registration) increased this parameters to hundreds and thousands [15]. This allowed to increase certainty of blood typing and, also, to define the typing in case of samples with low agglutination.…”