Chloroquine dissociation of antigen-antibody complexes. A new technique for typing red blood cells with a positive direct antiglobulin test.

Abstract excerpt

We have investigated a method using the quinoline derivative chloroquine diphosphate (200 mg/ml, pH 5.0) to dissociate antibody without denaturing red blood cell antigens. All samples treated with chloroquine diphosphate demonstrated some dissociation of the coating immunoglobulin, and in most cases, the ability to dissociate the coating immunoglobulin was related to the strength of the direct antiglobulin test...

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