Evolution of allelic dimorphism in malarial surface antigens.

Abstract excerpt

The extensive sequence variation in most surface antigens of Plasmodium falciparum is one of the major factors why clinical immunity to malaria develops only after repeated infections with the same species over several years. For some P. falciparum surface antigens, all observed alleles clearly fall into two allelic classes, with divergence between classes dwarfing divergence within classes. We discuss the ways...

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