title: The natural resistance of pigeons to type 3 pneumococcus.
mesh_terms: D000818:Animals; D000906:Antibodies; D000917:Antibody Formation; D000918:Antibody Specificity; D000937:Antigen-Antibody Reactions; D001428:Bacterial Vaccines; D010856:Columbidae / Q000276:immunology*; D006386:Hemagglutination Tests; D007106:Immune Sera; D051379:Mice; D009895:Opsonin Proteins / Q000097:blood; D010759:Phosphorus Isotopes; D011008:Pneumococcal Infections / Q000382:microbiology; D013296:Streptococcus pneumoniae / Q000276:immunology*
chemical_list: D000906:Antibodies; D001428:Bacterial Vaccines; D007106:Immune Sera; D009895:Opsonin Proteins; D010759:Phosphorus Isotopes