title: EVOLUTION OF THE IMMUNE RESPONSE. II. MORPHOLOGIC STUDIES ON THE ORIGIN OF THE THYMUS AND ORGANIZED LYMPHOID TISSUE.
mesh_terms: D000937:Antigen-Antibody Reactions; D001853:Bone Marrow; D004920:Erythropoiesis; D005399:Fishes; D006410:Hematopoiesis; D006801:Humans; D007109:Immunity; D008214:Lymphocytes; D008221:Lymphoid Tissue; D010784:Photomicrography; D013154:Spleen; D013950:Thymus Gland; D005719:gamma-Globulins
chemical_list: D005719:gamma-Globulins
keywords: ANTIGEN-ANTIBODY REACTIONS; BONE MARROW; ERYTHROPOIESIS; FISHES; GAMMA GLOBULIN; HEMATOPOIESIS; IMMUNITY; LYMPHOCYTES; LYMPHOID TISSUE; PHOTOMICROGRAPHY; SPLEEN; THYMUS GLAND