To screen and identify irregular antibodies, whatever the technique used, fresh erythrocytes (RBCs) are needed to set up the panel. Solid-phase tests using dried blood cells are available, but the technique is based on the adherence of sensitized RBCs, which have a short life span. We have checked antigen survival on membranes with a saline test and an antiglobulin test for two methods to preserve the antigen substrate: freeze-drying of RBCs and preparation of RBC membranes. The different antigens of the ABO, Rhesus, Kell, R Lewis, MNSs, Lutheran,Duffy, Kidd and Li systems are well recognized on the membranes after isolation and on freeze-dried cells. Demonstration of antigen survival leads us to consider using membranes or freeze-dried cells in new immunological tests.

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1995
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