Relapse mechanisms in malaria: emergence of variant strains of Plasmodium lophurae from serum antigen-immunized ducks.
D000818:Animals; D000937:Antigen-Antibody Reactions; D004372:Ducks; D008289:Malaria, Avian / Q000276:immunology*; D010961:Plasmodium / Q000276:immunology*; D013045:Species Specificity