The levels of CEA, Lys, Fr and ?2-MG of serum and brochoalveolar lavage fluid (BALF) were determined in 99 patients with inflammatory lung diseases and 23 healthy subjects for controls. Their levels in BALF were compared between diseased and normal sides of lungs. The value of diagnosis of individual formulas was suggested. The combined ditermination of multiple biomarkers in serum and BALF can help to raise the positivity and spcificity of diagnosis of lung cancer.
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