Antibodies to Haemophilus influenzae in the sera of patients with chronic bronchitis.
D000906:Antibodies; D001991:Bronchitis / Q000276:immunology*; D006193:Haemophilus influenzae / Q000276:immunology*; D006386:Hemagglutination Tests; D006801:Humans; D011233:Precipitin Tests
D000906:Antibodies