title: Precommitment in the immune system.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000937:Antigen-Antibody Reactions; D001402:B-Lymphocytes / Q000276:immunology* / Q000528:radiation effects; D001666:Binding Sites, Antibody; D001853:Bone Marrow / Q000276:immunology; D001854:Bone Marrow Cells; D002452:Cell Count; D002454:Cell Differentiation; D002462:Cell Membrane / Q000276:immunology; D002469:Cell Separation; D000939:Epitopes; D006462:Hemolytic Plaque Technique; D007108:Immune Tolerance; D007112:Immunity, Maternally-Acquired; D007116:Immunization, Passive; D007136:Immunoglobulins / Q000096:biosynthesis; D007457:Iodine Radioisotopes; D051379:Mice; D008815:Mice, Inbred Strains; D011828:Radiation Chimera; D011830:Radiation Effects; D011863:Radioimmunoassay; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology; D014981:Xenopus
chemical_list: D000939:Epitopes; D007136:Immunoglobulins; D007457:Iodine Radioisotopes