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Role of Antibody and Complement in the Immune Clearance and Destruction of Erythrocytes I. IN VIVO EFFECTS OF IgG AND IgM COMPLEMENT-FIXING SITES
Aland D. Schreiber, Michael M. Frank
Aland D. Schreiber, Michael M. Frank
Published March 1, 1972
Citation Information: J Clin Invest. 1972;51(3):575-582. https://doi.org/10.1172/JCI106846.
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Research Article

Role of Antibody and Complement in the Immune Clearance and Destruction of Erythrocytes I. IN VIVO EFFECTS OF IgG AND IgM COMPLEMENT-FIXING SITES

Abstract

A model which permits evaluation in molecular terms of the role of antibody and of complement in the immune destruction of erythrocytes was established in the guinea pig. IgM and IgG immunoglobulins were isolated from rabbit anti-guinea pig erythrocyte antisera and were used to sensitize 51Cr-labeled guinea pig erythrocytes. The average number of complement-fixing sites per erythrocyte formed by antibody was determined for each of the various preparations by the Cla fixation and transfer test. The rate of clearance and of organ localization was determined for cells sensitized with either IgM or IgG antibodies, and dose-response curves were established in normal guinea pigs and guinea pigs with a genetically controlled, complete absence of the fourth component of complement (C4).

Authors

Aland D. Schreiber, Michael M. Frank

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