VIRUS ANTIBODY STUDIES IN EXACERBATIONS OF CHRONIC BRONCHITIS.
D000906:Antibodies; D000917:Antibody Formation; D001991:Bronchitis; D029481:Bronchitis, Chronic; D003168:Complement Fixation Tests; D006801:Humans; D007136:Immunoglobulins; D014777:Virus Diseases
D000906:Antibodies; D007136:Immunoglobulins
ANTIBODY FORMATION; BRONCHITIS; COMPLEMENT FIXATION TESTS; VIRUS DISEASES