[ chronic bronchitis : concentration of alpha-1-antitrypsin ( alpha-1-pi ) , alpha-2-microglobulin ( alpha-2-pi ) , c-reactive protein , alpha-1 acid glycoprotein , immunoglobulin a ( iga ) and secretory iga in sputum and serum ] .
C0020835
immunoglobulin a
C0020838
secretory iga