title: Microenvironments in the lymphoid system.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells / Q000276:immunology; D000941:Antigens; D001402:B-Lymphocytes / Q000276:immunology; D001666:Binding Sites, Antibody; D002060:Bursa of Fabricius / Q000166:cytology / Q000276:immunology; D002454:Cell Differentiation; D002462:Cell Membrane / Q000276:immunology; D002465:Cell Movement; D006412:Hematopoietic Stem Cells; D007111:Immunity, Cellular; D008208:Lymphatic System / Q000276:immunology*; D008214:Lymphocytes / Q000276:immunology; D008264:Macrophages / Q000276:immunology; D051379:Mice; D051381:Rats; D013601:T-Lymphocytes / Q000276:immunology; D013950:Thymus Gland / Q000166:cytology / Q000276:immunology
chemical_list: D000941:Antigens