title: Clinical aspects of protective immunity of the respiratory tract.
mesh_terms: D000305:Adrenal Cortex Hormones / Q000009:adverse effects; D001249:Asthma / Q000276:immunology; D001772:Blood Cell Count; D001991:Bronchitis / Q000276:immunology; D002908:Chronic Disease; D004406:Dysgammaglobulinemia / Q000276:immunology; D006801:Humans; D007109:Immunity; D007070:Immunoglobulin A / Q000032:analysis; D007071:Immunoglobulin A, Secretory / Q000096:biosynthesis; D007075:Immunoglobulin M / Q000032:analysis; D007153:Immunologic Deficiency Syndromes / Q000276:immunology; D007166:Immunosuppressive Agents / Q000009:adverse effects; D010950:Plasma Cells / Q000276:immunology; D012137:Respiratory System / Q000276:immunology* / Q000378:metabolism; D012141:Respiratory Tract Infections / Q000276:immunology; D012635:Secretory Component / Q000032:analysis; D012907:Smoking; D013183:Sputum / Q000032:analysis; D014132:Trachea / Q000276:immunology
chemical_list: D000305:Adrenal Cortex Hormones; D007070:Immunoglobulin A; D007071:Immunoglobulin A, Secretory; D007075:Immunoglobulin M; D007166:Immunosuppressive Agents; D012635:Secretory Component