title: A DARWINIAN APPROACH TO IMMUNITY.
mesh_terms: D000906:Antibodies; D007109:Immunity; D008214:Lymphocytes; D008221:Lymphoid Tissue; D008407:Mast Cells; D009154:Mutation; D010950:Plasma Cells; D005719:gamma-Globulins
chemical_list: D000906:Antibodies; D005719:gamma-Globulins
keywords: ANTIBODIES; GAMMA GLOBULIN; IMMUNITY; LYMPHOCYTES; LYMPHOID TISSUE; MAST CELLS; MUTATION; PLASMA CELLS; REVIEW