title: Stimulation of the hemagglutinin response of aged mice by cell-free lymphoid tissue fractions and bacterial endotoxin.
mesh_terms: D000375:Aging; D000818:Animals; D000906:Antibodies / Q000032:analysis; D000917:Antibody Formation; D000937:Antigen-Antibody Reactions; D002474:Cell-Free System; D004731:Endotoxins; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006386:Hemagglutination Tests; D007110:Immunity, Active; D007274:Injections, Intraperitoneal; D008221:Lymphoid Tissue / Q000276:immunology*; D051379:Mice; D008815:Mice, Inbred Strains; D010047:Ovalbumin; D012756:Sheep; D013154:Spleen / Q000276:immunology; D013950:Thymus Gland / Q000276:immunology; D014020:Tissue Extracts
chemical_list: D000906:Antibodies; D004731:Endotoxins; D014020:Tissue Extracts; D010047:Ovalbumin