[Changes in the properties of human erythrocyte membranes in the presence of isoimmune antibodies].

Light diffusion was used to study the properties of the red cell membrane of human heparinized blood under the action of different concentrations of isoimmune anti-erythrocyte anti-Rh antibodies. An increase was found in the temperature of phase transitions and density of the red cell membrane, which depended on the antibody activity. These changes were also observed in the presence of low antibody concentrations, provoking no conspicuous agglutination.