[The defense mechanism and its weakening: the defense mechanism by cellular immunity].
D000818:Animals; D007111:Immunity, Cellular; D008222:Lymphokines / Q000502:physiology; D008262:Macrophage Activation; D016215:Macrophage-Activating Factors; D008264:Macrophages / Q000276:immunology; D011948:Receptors, Antigen, T-Cell / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
D008222:Lymphokines; D016215:Macrophage-Activating Factors; D011948:Receptors, Antigen, T-Cell