[The body's external means of defense].
D006801:Humans; D007239:Infections / Q000503:physiopathology*; D009092:Mucous Membrane / Q000382:microbiology / Q000502:physiology*; D012867:Skin / Q000382:microbiology; D012879:Skin Physiological Phenomena
Moyens de défense externe de l'organisme.