title: Immunological studies on simian malaria parasites. IV. Heterologous superinfection of monkeys with chronic Plasmodium knowlesi infections.
mesh_terms: D000818:Animals; D002908:Chronic Disease; D000882:Haplorhini; D007109:Immunity; D008288:Malaria / Q000276:immunology*; D010961:Plasmodium / Q000276:immunology; D013045:Species Specificity