The Agglutination Mechanism of Trypsin Modified Red Cells

The agglutination mechanism of trypsin modified red cells.

The study of agglutination of trypsin-treated sheep red cells by Corynebacterium diphtheriae strains.

620 Corynebacterium diphtheriae strains from 472 sick and healthy persons were studied for their adhesive activity (AA) in direct agglutination of trypsin-treated sheep erythrocytes. Toxigenic strains had more active AA than non-toxigenic ones which was not dependent on the presence of toxin in the culture. Neither biotype nor serotype of the strains correlated with their AA. Several lysotypes ...

The Agglutination of Red Blood Cells

1. Unsensitized sheep cells suspended in sugar solutions are agglutinated by electrolytes whenever the potential is depressed to 6 millivolts or less, except in the case of MgCl(2) or CaCl(2). 2. With these salts no agglutination occurs although there is practically no potential. The presence of these salts prevents acid agglutination. This is presumably due to a decrease in the "cohesion" betw...

Agglutination by polylysine of young and old red blood cells.

The rate of agglutination by polylysine of young and old human erythrocytes was automatically recorded and correlated with measurements of the electrophoretic mobility of these cells. Old red cells have a reduced electrophoretic mobility as compared with young cells, as well as a higher rate of agglutination than young cells. Mild treatment of red cells with receptor destroying enzyme (RDE) whi...

Factors influencing the agglutination of red blood cells, red blood cell stroma, and lymphocytes.

In a recent review of the literature (1,2), many of the problems dealing with cellular agglutination caused by ricin are presented and discussed. Although this phenomenon was first described in 1888 by Stilhnark, reactions involved in the agglutination of cells are poorly understood. The present report is concerned with factors which affect agglutination. Data are presented which show that eryt...