Fig. 2From: CYFRA21-1 is a more sensitive biomarker to assess the severity of pulmonary alveolar proteinosisThe SPSP of patients in higher and lower level groups on serum biomarkers. The SPSP of patients in higher serum LDH, CEA or CYFRA21-1 groups was higher than that of corresponding lower level groups (all P < 0.001)Back to article page