Abstract
We find Wr(a + b-) erythrocytes of donor M. Fr., which appear to carry a rare glycophorin A variant, to be fully susceptible to invasion by nine isolates of Plasmodium falciparum. Thus we fail to confirm the previous publication on the refractoriness of these erythrocytes. In addition the serum of donor M. Fr., which is known to contain anti-Wrb directed against an epitope located on glycophorin A in close proximity to the erythrocyte membrane, was not found to inhibit P. falciparum invasion of blood group O Rh- red blood cells. Despite this, different lines of evidence still indicate that glycophorin A is one of the receptors for erythrocyte invasion by P. falciparum. The Wrb epitope, however, does not appear to represent a distinct receptor site, which is in contrast to previous suggestions.
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