Figure 2From: Distinct compartmentalization of SP-A and SP-D in the vasculature and lungs of patients with idiopathic pulmonary fibrosis Bronchoalveolar lavage fluid (BALF)/serum level ratio of (A) SP-A and (B) SP-D. Concerning both SP-A and SP-D, the ratio was smaller in idiopathic pulmonary fibrosis (IPF) patients than in sarcoidosis (SAR) patients (P = 0.01 and P < 0.001, respectively).Back to article page