[Immunity and defenses against infection].
The roles of the immune system are to protect the host from the various pathogenic agents and to ensure the tolerance to self. It brings into play two categories of processes which appeared successively during the evolution, innate immunity and adaptive immunity. The actors of these two processes will be recruited in a sequential way in the event of infection by a micro-organism.
Picard
Capucine
C
Centre détude des déficits immunitaires, hôpital Necker-Enfants-Malades, 75015 Paris. picardc@necker.fr
D000917:Antibody Formation; D006801:Humans; D007109:Immunity; D007111:Immunity, Cellular; D007113:Immunity, Innate; D007074:Immunoglobulin G / Q000276:immunology; D007075:Immunoglobulin M / Q000276:immunology; D007239:Infections / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology; D051193:Toll-Like Receptors / Q000276:immunology; D014409:Tumor Necrosis Factor-alpha / Q000276:immunology
D007074:Immunoglobulin G; D007075:Immunoglobulin M; D051193:Toll-Like Receptors; D014409:Tumor Necrosis Factor-alpha