title: The immune response. Some unifying concepts.
mesh_terms: D000818:Animals; D000937:Antigen-Antibody Reactions; D006168:Guinea Pigs; D006968:Hypersensitivity, Delayed; D006969:Hypersensitivity, Immediate; D008239:Lysine; D012882:Skin Tests
chemical_list: D008239:Lysine