title: Influence of pertussis vaccine and bacterial endotoxin on blood leukocyte counts and numbers of pre-existing antibody-forming cells in aged mice.
mesh_terms: D000375:Aging; D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells; D004731:Endotoxins; D006461:Hemolysis; D006462:Hemolytic Plaque Technique; D007958:Leukocyte Count; D007962:Leukocytes / Q000276:immunology* / Q000382:microbiology; D007964:Leukocytosis / Q000209:etiology; D051379:Mice; D010567:Pertussis Vaccine; D012706:Serratia marcescens; D012756:Sheep; D013154:Spleen / Q000276:immunology; D013997:Time Factors
chemical_list: D004731:Endotoxins; D010567:Pertussis Vaccine