title: Leukocyte "sense organs".
mesh_terms: D000818:Animals; D000918:Antibody Specificity; D001172:Arthritis, Rheumatoid / Q000276:immunology; D000939:Epitopes; D006801:Humans; D007106:Immune Sera; D007136:Immunoglobulins; D007962:Leukocytes / Q000276:immunology*; D008214:Lymphocytes / Q000276:immunology; D008264:Macrophages; D014777:Virus Diseases / Q000276:immunology
chemical_list: D000939:Epitopes; D007106:Immune Sera; D007136:Immunoglobulins