[Modification of the host defense mechanism and its influence on infectious diseases].
D000368:Aged; D000818:Animals; D000917:Antibody Formation; D003165:Complement System Proteins / Q000276:immunology; D004198:Disease Susceptibility; D005260:Female; D006801:Humans; D007109:Immunity; D007111:Immunity, Cellular; D007239:Infections / Q000276:immunology*; D007694:Killer Cells, Natural / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology; D008264:Macrophages / Q000276:immunology; D051379:Mice; D008819:Mice, Nude; D009000:Monocytes / Q000276:immunology; D009504:Neutrophils / Q000276:immunology; D009895:Opsonin Proteins / Q000276:immunology; D011247:Pregnancy
D009895:Opsonin Proteins; D003165:Complement System Proteins