[The defense mechanism and its weakening: significance of antigen mutation--antigenic shift and drift of Plasmodium].
D000953:Antigens, Protozoan / Q000276:immunology*; D006801:Humans; D010961:Plasmodium / Q000235:genetics / Q000276:immunology*; D014612:Vaccines
D000953:Antigens, Protozoan; D014612:Vaccines